12/5/2016 new driver models for direct download:1146
Chinese Simplified 4 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for Chinese Simplified 4
Certifications for Chinese Simplified 4
5 stars for Chinese Simplified 4 "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 12/5/2016 Updates

All drivers on are updated on daily basis.

However, a new version of Chinese Simplified 4 might have been uploaded since our last site update.

Chinese Simplified 4 Driver Download

Windows Compatibility for Chinese Simplified 4 driver

Chinese Simplified 4 Driver Details:

Chinese Simplified 4 File Name:

Chinese Simplified 4 Driver Version: 79sX.1Q

Chinese Simplified 4 ZIP Size: 115.kb

Manufacturer: Chinese

Chinese Simplified 4 was fully scanned at: 12/3/2016
Scan Status: driver download scanOK

Chinese Simplified 4 special revision for: Windows 7 Ultimate 64 bit, Windows Vista Business 64 bit, Windows 7 Home Basic 32 bit, Windows 7 Enterprise (Microsoft Windows NT) 64 bit, Windows XP Tablet PC Edition 32 bit, Windows 7 Service Pack 1 (Microsoft Windows NT) 64 bit, Windows XP Professional 32 bit, Windows XP Starter Edition 64 bit, Windows XP Media Center Edition 2003 64 bit, Windows XP Professional x64 Edition 64 bit

Chinese Simplified 4 Download Stats:

Driver Uploaded: 12/4/2016

Direct Downloads: 119
Most Recent Download: 12/4/2016
Managed Downloads: 2821
Most Recent Download: 12/3/2016
Download Mirrors: 5
Current Delay: 16 Seconds
Driver License: FS {free software}

Direct Download Success Stats:

Reports Issued By 98/119 Users

Success Reported By 13/98 Users

Driver Download Score71/100

Driver Installation Score62/100

Overall preformance Score63/100

Chinese Simplified 4 1 Thumbs Up1Thumbs
Chinese Simplified 4 0 Thumbs Down0Thumbs
Chinese Simplified 4 driver direct download was reported as adequate by a large percentage of our reporters, so it should be good to download and install.

Installation Manager Success Stats:

Reports Issued By 2385/2821 Users

Success Reported By 1939/2385 Users

Driver Download Score97/100

Driver Installation Score76/100

Overall preformance Score82/100

Chinese Simplified 4 1822 Thumbs Up1822Thumbs
Chinese Simplified 4 52 Thumbs Down52Thumbs
Chinese Simplified 4 driver installation manager was reported as very satisfying by a large percentage of our reporters, so it is recommended to download and install.


1. Direct Download

Select your OS and press "Download".

This option requires basic OS understanding.
Select Your Operating System, download zipped files, and then proceed to
manually install them.
Recommended if Chinese Simplified 4 is the only driver on your PC you wish to update.


2. Driver Installation Manager

This option requires no OS understanding.
Automatically scans your PC for the specific required version of Chinese Simplified 4 + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing Chinese Simplified 4, or the driver installation manager, take a few minutes to send us a report:
* Only registered users can upload a report.

Don’t have a password?
Please register, and get one.

Chinese Simplified 4 may sometimes be at fault for other drivers ceasing to function

These are the driver scans of 2 of our recent wiki members*

*Scans were performed on computers suffering from Chinese Simplified 4 disfunctions.

Scan performed on 12/5/2016, Computer: HP HP Compaq Nx6125

Outdated or Corrupted drivers:8/20

Device/DriverStatusStatus DescriptionUpdated By Scanner
Microsoft PCI standard host CPU bridgeOutdated
Mice And Touchpads
Logicool HID-compliant mouseUp To Date and Functioning
Microsoft Microsoft USB Compact Optical Mouse (IntelliPoint)Up To Date and Functioning
Microsoft HID-compliant muisUp To Date and Functioning
Usb Devices
Fresco Logic Fresco Logic xHCI (USB3) Root HubOutdated Hercules Muse Pocket (commercial 2.8.45)Up To Date and Functioning
Sound Cards And Media Devices
Microsoft HD-3000 - Microsoft LifeCam.Up To Date and Functioning
ASUSTek ASUSTeK Silicon BDA Video CaptureUp To Date and Functioning
Network Cards
Qualcomm Atheros Qualcomm Atheros AR9462 802.11a/b/g/n WiFi AdapterUp To Date and Functioning
Microsoft HID KeyboardUp To Date and Functioning
Hard Disk Controller
NVIDIA NVIDIA Network Bus EnumeratorCorrupted By Chinese Simplified 4
Microsoft HID-compliant apparaatUp To Date and Functioning
Motorola Android Composite ADB InterfaceUp To Date and Functioning
Datel Design & Development DSi AR HW ProgUp To Date and Functioning
Cameras, Webcams And Scanners
EPSON EPSON Stylus CX6400Corrupted By Chinese Simplified 4
Video Cards
Intel Video ControllerOutdated
Input Devices
Logitech Logitech WingMan Formula (ADI)Corrupted By Chinese Simplified 4
Port Devices
PROLiNK PROLiNK Diagnostics Device (COM8)Corrupted By Chinese Simplified 4
Sony Digital Flat Panel (1024x768)Up To Date and Functioning
Mobile Phones And Portable Devices
Acer NOKIACorrupted By Chinese Simplified 4

Scan performed on 12/5/2016, Computer: ASUS CG5290

Outdated or Corrupted drivers:8/20

Device/DriverStatusStatus DescriptionUpdated By Scanner
Synaptics Intel(R) 5 Series/3400 Series-Chipsatzfamilie - SMBus-Controller - 3B30Corrupted By Chinese Simplified 4
Mice And Touchpads
HP HID-compliant muisUp To Date and Functioning
Logicool Logitech HID-compliant Unifying MouseUp To Date and Functioning
Synaptics Synaptics PS/2 Port Compatible TouchPadUp To Date and Functioning
Usb Devices
Texas Instruments Texas Instruments USB Root HubCorrupted By Chinese Simplified 4
Sound Cards And Media Devices
Logitech Webcam C170Up To Date and Functioning
Creative Sound Blaster X-Fi Xtreme AudioOutdated
AVerMedia Controller video multimedialeUp To Date and Functioning
Network Cards
Intel(R) Wireless-N 7260Outdated
Microsoft HID KeyboardCorrupted By Chinese Simplified 4
Hard Disk Controller
Ricoh Ricoh SD/MMC ControllerUp To Date and Functioning
Intel Intel(r) AIM External Flat Panel Driver 3Corrupted By Chinese Simplified 4
Nokia Nokia C6-00 USB OBEXUp To Date and Functioning
NEC Texas Instruments PCIxx21/x515 Cardbus ControllerCorrupted By Chinese Simplified 4
Cameras, Webcams And Scanners
Philips Philips SPC1030NC WebcamUp To Date and Functioning
Video Cards
ATI RADEON X600 Series Secondary (Microsoft Corporation - WDDM)Up To Date and Functioning
Input Devices
KME Periferica USB Human InterfaceCorrupted By Chinese Simplified 4
Port Devices
MediaTek DA USB VCOM Port (COM11)Up To Date and Functioning
Sony Digital Flat Panel (1024x768)Up To Date and Functioning
Mobile Phones And Portable Devices
Acer NOKIAUp To Date and Functioning
Driver ModelOriginal Upload DateLast ModificationDriver FileFile SizeCompatible Computer ModelsAvailabilty To Instalation Manager
Chinese Simplified 4 K31.1301.13/7/201512/30/2015chinese_simplified_4-k31.1301.1.exe174kbPanasonic CF47, MSI MS-7030, Compaq NP291AA-AB2 SR5837CX, Creative AIO1900 Series, ZOTAC ZBOXNXS-AD11, Packard Bell IMEDIA H7653, NEC PC-LM530WH6B, NEC PC-MK34HEZEH, Panasonic CF-W2FW1AXS, Compaq DT260A-ABU S5210UK GB340, Fujitsu FMV5NUBJH3, Acer Aspire 18X5PTZ, HP PS354AA-ABX, Toshiba Qosmio X75-A, LG E500-S.AP28P, Lenovo ThinkCentre M75e, Panasonic CF-52AJCBDBM, and more.
Chinese Simplified 4 N71.12.1079/16/201412/29/2015chinese_simplified_4-n71.12.107.exe198kbHP HP 655 Not3book PC, HP HP ENVY17 NOTEBOOK, HP PX568AA-ABY, Packard Bell IMEDIA X1300 AIO, Intel Intel G33 Series, Sony VGN-CR313H_B, ICP/iEi B216, Open Labs Neko/Miko, Packard Bell IMEDIA H5689, Lenovo ThinkPad Edge E420, SAMSUN 3570R/370R/470R/450R/510R/4450RV, HP EJ210AA-ABS, HP Pavilion ze4500, HP RR496AA-ABU, Fujitsu LIFEBOOK UH574, and more.
Chinese Simplified 4 806301/12/201512/30/2015chinese_simplified_4-80630.exe219kbNEC RNF91180985, LG R510-S.AP87K, Olidata JumPC, Sony VPCEH1Z1R, IBM IBM System x3500 M4 Server -[7383E1G, Toshiba SATELLITE C855-2L1, NEC PC-MY28AAZ75, HP HP d530 CMT, Toshiba Glacier10F, Seneca Pro46956, IBM 8184NUG, Sony VGN-CS2, Apple Macmini1,1, and more.
Chinese Simplified 4 41.12243/2/201512/27/2015chinese_simplified_4-41.1224.exe160kbPanasonic CF-Y5LW8AXS, HP Compaq Presario C700 KQ185EA#ABE, Omni OTC-H3222D00, Packard Bell IMEDIA D3013, Dell OptiPlex GX1 600L, Sony VGC-LS30E, IBM ThinkPad R51, Dimotion LF13Z0077396, IBM 8123W8E, Sony VGN-SZ1XP, IBM ThinkPad Z60m, AT ALZA GAMEBOX, HP P6740ch-m, IBM ThinkPad T43p, Epson Endeavor MT8800, and more.
Chinese Simplified 4 K1.1392910/23/201412/30/2015chinese_simplified_4-k1.13929.exe20kbGateway FX4710-UB802A, HP Pavilion dv8000, HP GZ729AAR-ABA a6317c, HP VS312AA-UUG HPE-025be, IBM 8185LUZ, NEC PC-BL550DS6W, HP EJ237AA-ABF w5267.f, Acer Aspire 5672, Packard Bell EasyNote TM01, Acer Predator G5900, Sony PCG-K14, Packard Bell PBIPGX, and more.
Chinese Simplified 4 832.1781/4/201512/29/2015bd-832.178.exe151kbGateway NX200X, HP VN470AA-UUZ m9837ch, Lenovo ThinkCentre M57e, HP RR496AA-ABU, Sony VGN-FW43G_B, Lenovo 6075Y5X, IBM 2668W9R, NEC PC-VT1000J6FD, Compaq DA309A-B14 6540. BE910, LG S1-MOM1E2, HP P8315A-ABZ 451, Fujitsu FMVNS8YE, LG S530-L.ACR1AD, NEC RNM21223076, Panasonic CF-19FHLAXAM, ASUS F6Ve, Powerspec B647, HP Pavilion dv8000, Lenovo 2876AR1, and more.
Chinese Simplified 4 E500-K.APCAY, Sony VGN-AW150Y, NEC PC-GV267VZDL, ASUS K50IJ, HP HP Compaq 6910p, LG B75PS.AS5MB1D, ASUS A7V, IBM 62237BU, LG R410-L.A2BME8, IBM 2724NM0, Packard Bell TK36, Supermicro X7DB8-X, IBM 622133G, HP PY142AA-AB3 w5180d, Sony VGN-FJ11_W, Lenovo ThinkCentre A57, Lenovo 20ARA024KR, Compaq PW679AA-ABE SR1377ES ES510, HP RJ116AA-UUW, and more.
Chinese Simplified 4 81.104711/3/201412/30/2015chinese_simplified_4-81.1047.exe99kbGateway P-6317 HSN, MSI GR620, Sony VPCEB4E9R, Sony PCG-GRZ615M, Powerspec B651, Lenovo IdeaPad S10-3s, Compaq GC662AA-ABA SR5113WM, HP VT626AA-AB1 HPE-170k, FIC VA250U, LG F1-2227K, Panasonic CF-19FDGCFWG, Sony VGN-CS31Z_Q, ASUS G70AB, IBM IBM IntelliStation M Pro -[922962J, Toshiba SATELLITE C855-23Z, Sony VPCCW2S1R, NEC PC-MY30DEZCA, and more.
Chinese Simplified 4 Z31.1091.12/1/201512/29/2015chinese_simplified_4-z31.1091.1.exe23kbSony VGN-P35GK_R, Gigabyte B85N-WIFI, Fujitsu FMVFB70NT, Sony VGN-TZ35FN, Packard Bell IXtreme J8038, Gateway FX7026, Zoostorm 7876-0310B, Fujitsu CLW8GAG1D, Fujitsu FMVNP2HT3A, Toshiba SATELLITE C855-1LC, LG LW75-SGGV3, Supermicro X9DR3-F, HP KT541AA-UUB a6528hk, ADVANC Modelo_A, and more.
Chinese Simplified 4 2.1221.1012/14/201412/27/2015chinese_simplified_4-2.1221.10.exe178kbFujitsu CELSIUS H265, Compaq EC537AA-ABZ SR1549IT IT530, Packard Bell ISTART D3180, Dell Inspiron N4050, Packard Bell EASYNOTE SW86, NEC PC-VK26MDZCE, ASUS BM5275, Sony VGN-K30, Packard Bell IMEDIA B6363, IBM System x3650 M4 -[7915F2M, and more.
Chinese Simplified 4 428699/2/201412/28/2015chinese_simplified_4-42869.exe171kbHP PN111AA-ABF t760.f, HP 600-1390, Sony SVF1521R2EW, ASUS X200MA, HP NC896AAR-ABA a6863w, Dimotion LF13Z0077396, Sony VGN-S5VP_B, HP HP ProBook 6560b, WIPRO WSG48105V-0015, Mecer X107, NEC PC-VK26MDZCE, Sony VGN-SZ38GP_C, HP Rfrb h8-1100z, HP Compaq 615, Lenovo 2429BH6, and more.
Chinese Simplified 4 81.160410/23/201412/29/2015chinese_simplified_4-81.1604.exe199kbSAMSUN 3570R/370R/470R/450R/510R/4450RV, HP EJ210AA-ABS, HP Pavilion ze4500, HP RR496AA-ABU, Fujitsu LIFEBOOK UH574, NEC E6500, Compaq PN182AA-ABS SR1210SF EL440, HP HP Compaq nx6130, CdcPointSpa CX-7592, IBM IBM eServer x226-[8648W16, Acer Dalle, NEC PC-MY26LEZ78, HP CQ2900EC, WIPRO WSG37455V-0008, LG RD510-L.ADV3E8, HP HP Compaq dc7900 Convertible Microtowe, Toshiba Satellite A110-293, Acer AX12300-U1801A, HP HP Pavilion dv9700, and more.
Chinese Simplified 4 1.108263/7/201512/30/2015chinese_simplified_4-1.10826.exe132kbCompaq AY552AA-AB5 CQ3118HK, HP HP EliteBook 8530w, IBM ThinkPad Z60m, HP Compaq nx5000, Gateway FX6800-05, Packard Bell IMEDIA MC 5303, Panasonic CF-T5MWJTFBF, Gigabyte T1005, NEC PC-MY28VLZEJ, Packard Bell IMEDIA H5689, Stone NOTCHA-101, Sony PCG-GRT896SP, IBM 842777G, and more.
Chinese Simplified 4 31.12.1743/1/201512/28/2015chinese_simplified_4-31.12.174.exe164kbLenovo 2689PHG, NEC PC-LL770BD, HP KJ415AA-AB4 m9290d, HP 600-1210ch, HP HP Compaq nw8000, IBM 2652GG4, Gateway 0AAVWP08, Sony SVE14A25CDB, HP FL447AA-ACB a6641ru, CCEInf CDC-I, Toshiba SATELLITE L870-150, HP Compaq nx9040, Gateway E-155CG, and more.
Chinese Simplified 4 61.12.1723/2/201512/29/2015chinese_simplified_4-61.12.172.exe116kbMSI MS-9818, Lenovo ThinkPad L430, NEC PC-GV286VZAU, Sony VGN-FS92S, AnabelleB Graduate VA20, LG FD-223NC, HP FK913AA-ABG s3660a, IBM IBM IntelliStation M Pro -[922962J, Panasonic CF-52JE203NW, Toshiba Dynabook Satellite T42 240E/5W, and more.
Chinese Simplified 4 V301.11.112/7/201412/29/2015eutluzvgq-v301.11.1.exe213kbASUS VX5, Toshiba Dynabook T552/36FBK, Medion P6612, FIC LM10W, WIPRO WNBOBM4930-EK-0015, Fujitsu FMVNFB70RG, AnabelleB Argyle V240, Lanix LANIX TITAN 3050 VER3, IBM 1871WNV, Panasonic CF-W4GWPAXP, HP P6747ch-m, IBM Razo, PCP+ G41 Xeon series, INVESTRONICA PTC-Q965, ASUS B400AV, Fujitsu FMVD707AY, HP PX662AA-AB9, and more.
Chinese Simplified 4 I7042.169/5/201412/27/2015chinese_simplified_4-i7042.16.exe124kbHP KN483AA-AB8 m9242.t, HP Presario V4000, EMachines EL1330, IBM ThinkPad T21, Packard Bell IMEDIA B2218 UK, Biostar TP45 HP, Toshiba SATELLITE C855-20M, Lenovo ThinkCentre M58e, Toshiba SATELLITE L850-1R7, Lenovo Lenovo IdeaPad Y485, and more.
Chinese Simplified 4 2.11.16372/21/201512/28/2015chinese_simplified_4-2.11.1637.exe77kbNEC VERSAE6300 RNF51118188, Mitsubishi CX32VLZJTSBH, Acer Veriton X2631, Fujitsu FMVLRD7N24, Lenovo ThinkPad X200 Tablet, HP GJ404AA-UUZ, Toshiba Satellite X505, HP HP Pavilion TS 14 Notebook PC, HP NM920AA-ABU m9639uk, Acer Aspire5739, IBM ThinkCentre M52, Toshiba Equium L100, Panasonic CF-W7BWAZFBE, Sony VPCF135FG, Toshiba Satellite S50-A0317, LG Z1-B821P1, M&A MADB43LD, and more.
Chinese Simplified 4 704792/28/201512/28/2015chinese_simplified_4-70479.exe188kbToshiba Dynabook TX/66HPK, Panasonic CF-SX2KEMDP, HP HP Pavilion 15 Notebook PC, NEC RNG41146695, Sony VGN-TZ37LN_R, IBM 8171ZCQ, Fujitsu FMVA42CW2, NEC PC-LL770HG, Sony VPCEB13FG, MAXDATA PLATINUM 100 I M5, Gateway GT5473E, Gateway GZ7108TV, Lenovo 6075Y74, WIPRO WSG59355W7S-0014, HP AY627AAR-ABA a4313w, Dialogue Flybook VM, IBM 2373ZTS, and more.
Chinese Simplified 4 Pro86308, IBM 62237BU, Samsung 900X3F, HP VS417AA-ABF s5224f, Toshiba SATELLITE C855-23Z, AnabelleB Argyle M300, BenQ Joybook S72, Sony SVE14115FBB, HP KB020AA-ABF m9180.f, HP Presario 2500, and more.
Chinese Simplified 4 1.1382.199/20/201412/29/2015chinese_simplified_4-1.1382.19.exe28kbHP GX610AAR-ABA m9180f, Dell PowerVault NX3100, Lenovo ThinkPad T400s, HP ED737AA-ABS, Compal HGL30C, IBM 8084KGK, MCJ MCJ, Toshiba Satellite C660-196, Fujitsu FMVA0300C, HP HP HDX 16, SAMSUN 700Z, Sony VGN-NS21ER_S, Lenovo ThinkPad T430s, and more.
Chinese Simplified 4 8184NUG, Sony VGN-CS2, Apple Macmini1,1, IBM System x3200 M3 -[7328AC1, HP HP Compaq nc6400, Gigabyte M912, Compaq EG215AA-ABG SR1660AN AN540, HP GB323AA-B1U, IBM Lenovo ThinkServer TD200 -[38173GG, Lenovo Lenovo IdeaPad Y485, THEIS TH-C346/945GZME-RH/512/80/Midi-Towe, Lenovo 099343G, Fujitsu CELSIUS M730, Compaq ER922AA-ABA SR1834NX NA661, Lanix BRAIN 4140, Toshiba SATELLITE C855-1WU, Gigabyte G41MT-D3PT, IBM IBM eServer m Mem-[7976KJG, and more.
Chinese Simplified 4 2221.171/21/201512/30/2015chinese_simplified_4-2221.17.exe196kbPanasonic CF-53AAC01FG, Toshiba Dynabook EX1/524CDE, ASUS VX5, Packard Bell ISTART F7125 AIO, Lenovo 3000 J200 Desktop, Acer Extensa 7230, Sony VGN-FE18GP, HP RQ407AAR-ABA a1748x, Gigabyte W551, Sony VGN-FW160D, SIEMENS SIMATIC IPC627C, Acer Aspire E5-511P, Fujitsu FMVNS8AE, Toshiba SATELLITE P50-A-14L, and more.
Chinese Simplified 4 627038/28/201412/30/2015chinese_simplified_4-62703.exe153kbNorthern Micro P9X79-IN, Toshiba SATELLITE C850-16W, Acer ATC-603, Lenovo ThinkPad Edge E130, Prosys Prosys, Compaq EG735AA-ABH SR1560NL NL530, HP HP Pavilion dv6-6178ca, HP P7-1031, Toshiba Satellite L500D, IBM ThinkPad R52, Fujitsu FMVTE90YD, Lenovo ThinkPad T410s, IBM IBM System x3400 M2 Server -[7837K9G, Supermicro X9DRL-7F, Lenovo 209024U, NEC PC-VT1000J6FD, Acer Veriton L670, Panasonic CF-T5MWJTFBF, and more.
Chinese Simplified 4 722842/13/201512/27/2015wukudibg-72284.exe55kbHP EJ218AA-B14, Packard Bell IMEDIA J4715 AIO, HP DV6 - 3206AX, Gateway CT5628, Toshiba SATELLITE C855-1WU, HP Presario V2000, Acer Veriton X2631, Acer Veriton5500G-B, HP HP HDX 16 Notebook PC, Packard Bell IMEDIA D2000C, and more.
Chinese Simplified 4 3042.108/22/201412/27/2015chinese_simplified_4-3042.10.exe187kbAcer Veriton S480G, HP HP Pavilion dv7 Noteblook PC, Compaq DD376A-ABX 6660. FI110, NEC PC-MK33LBZCE, Lenovo ThinkPad T410s, Sony PCV-RZ104, HP VC893AA-ABF s5108f, Compaq EJ284AA-ABF SR1622FR FR540, HP H9-1390ef, Sony VPCEB19GX, IBM 62253J9, IBM 8113WSU, NEC PC-VY25AAZ7A, IBM 8184W3Z, Gateway FX540B, Compaq Presario 5471EA 470030-395, and more.
Chinese Simplified 4 EHI33220M, LG X130-G.A7B1E1, IBM 8123W8E, Compaq PS245AA-ABF SR1339FR FR510, Toshiba Satellite C850-B843, ASUS M50V, Intel MGM965JB, IBM 8114WGZ, Gigabyte Z68MA-D2H-B3, Fujitsu LifeBook A6210, WINCOR NIXDORF EPC A4, Dedicated OEM-A4501-00, HP RR521AA-UUW, and more.

Please Note: There are particular operating systems known to have problems with Chinese Simplified 4:
  • Windows XP Media Center Edition 2003
  • Windows XP Professional
  • Windows Vista Business
  • Windows Vista Starter
  • Windows XP Home Edition, for home desktops and laptops
  • Windows 10
  • Windows 7 Starter
  • Windows 8 Enterprise
  • Windows XP Professional x64 Edition
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific Chinese Simplified 4 model.
Laptop Chinese Simplified 4Tablet Chinese Simplified 4Download Chinese Simplified 4Upgrade Chinese Simplified 4Update Chinese Simplified 42016 Chinese Simplified 4Free Chinese Simplified 4Data Chinese Simplified 4Info Chinese Simplified 4Help Chinese Simplified 4Guide Chinese Simplified 4Comments Chinese Simplified 4Windows 10 Chinese Simplified 4Vista Chinese Simplified 4Windows 7 Chinese Simplified 4Install Chinese Simplified 4