1/19/2017 new driver models for direct download:590
A4tech Kl S40 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for A4tech Kl S40
Certifications for A4tech Kl S40
5 stars for A4tech Kl S40 "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 1/19/2017 Updates

All drivers on are updated on daily basis.

However, a new version of A4tech Kl S40 might have been uploaded since our last site update.

A4tech Kl S40 Driver Download

Windows Compatibility for A4tech Kl S40 driver

A4tech Kl S40 Driver Details:

A4tech Kl S40 File Name:

A4tech Kl S40 Driver Version: 303FG

A4tech Kl S40 ZIP Size: 102.kb

Manufacturer: A4tech

A4tech Kl S40 was fully scanned at: 1/15/2017
Scan Status: driver download scanOK

A4tech Kl S40 special revision for: Windows RT 32 bit, Windows XP Media Center Edition 64 bit, Windows 10 32 bit, Windows XP Starter Edition 64 bit, Windows 8 64 bit, Windows 7 Service Pack 1 (Microsoft Windows NT) 64 bit, Windows XP Professional N 64 bit, Windows 8 Pro 32 bit

A4tech Kl S40 Download Stats:

Driver Uploaded: 1/9/2017

Direct Downloads: 1041
Most Recent Download: 1/17/2017
Managed Downloads: 4125
Most Recent Download: 1/16/2017
Download Mirrors: 1
Current Delay: 26 Seconds
Driver License: GPL

Direct Download Success Stats:

Reports Issued By 884/1041 Users

Success Reported By 244/884 Users

Driver Download Score73/100

Driver Installation Score63/100

Overall preformance Score60/100

A4tech Kl S40 28 Thumbs Up28Thumbs
A4tech Kl S40 7 Thumbs Down7Thumbs
A4tech Kl S40 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 3475/4125 Users

Success Reported By 2792/3475 Users

Driver Download Score76/100

Driver Installation Score86/100

Overall preformance Score87/100

A4tech Kl S40 2724 Thumbs Up2724Thumbs
A4tech Kl S40 162 Thumbs Down162Thumbs
A4tech Kl S40 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 A4tech Kl S40 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 A4tech Kl S40 + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing A4tech Kl S40, 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.

A4tech Kl S40 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 A4tech Kl S40 disfunctions.

Scan performed on 1/19/2017, Computer: Packard Bell IMEDIA MCE 8010

Outdated or Corrupted drivers:7/18

Device/DriverStatusStatus DescriptionUpdated By Scanner
Advanced Micro Devices Controladora SMBus del procesador de comunicaciones de E/S ATICorrupted By A4tech Kl S40
Mice And Touchpads
Microsoft Microsoft USB IntelliMouse OpticalUp To Date and Functioning
ELAN Samsung PS/2 Port Input DeviceUp To Date and Functioning
Usb Devices
Sony Ericsson Sony Ericsson K320Up To Date and Functioning
Sound Cards And Media Devices
Realtek High Definition Audio-enhetUp To Date and Functioning
AVerMedia AVerMedia M791 PCIe Combo NTSC/ATSCUp To Date and Functioning
Network Cards
Atheros Atheros AR8121/AR8113/AR8114 PCI-E Ethernet ControllerUp To Date and Functioning
Microsoft Keyboard Device FilterUp To Date and Functioning
Hard Disk Controller
VIA VIA Bus Master IDE ControllerCorrupted By A4tech Kl S40
ENE ENE CB1410 Cardbus ControllerOutdated
NEC Texas Instruments PCIxx12 Cardbus ControllerUp To Date and Functioning
Microsoft Texas Instruments PCI-xx21/xx11 CardBus Controller with UltraMediaUp To Date and Functioning
Cameras, Webcams And Scanners
Intel Canon EOS 500DUp To Date and Functioning
Video Cards
Intel(R) HD Graphics 4000Up To Date and Functioning
Input Devices
KME USB-HID (Human Interface Device)Outdated
Port Devices
Huawei HUAWEI Mobile Connect - USB Device (COM32)Outdated
Sony Digital Flat Panel (1024x768)Outdated
Mobile Phones And Portable Devices
Acer NOKIACorrupted By A4tech Kl S40

Scan performed on 1/19/2017, Computer: HP KZ738AA-ABE

Outdated or Corrupted drivers:9/18

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel(R) processor Integrated Memory Controller Test Registers - 2C9CUp To Date and Functioning
Mice And Touchpads
(Standard mouse types) HID-compliant mouseUp To Date and Functioning
Usb Devices
Intel(R) USB 2.0-HubUp To Date and Functioning
NEC NEC PCI to USB Enhanced Host Controller uPD720101Corrupted By A4tech Kl S40
Sound Cards And Media Devices
Pixela Sony Digital TV TunerUp To Date and Functioning
AMD AMD SATA ControllerOutdated
NVIDIA NVIDIA GeForce GT 540M (Microsoft Corporation - WDDM v1.2)Outdated
Network Cards
TP-LINK TP-LINK 150Mbps Wireless N AdapterUp To Date and Functioning
Microsoft Keyboard Device FilterCorrupted By A4tech Kl S40
Hard Disk Controller
Silicon Integrated SiS PCI IDE ControllerOutdated
AuthenTec TouchChip Fingerprint Coprocessor (WBF advanced mode)Outdated
Nokia Nokia C6-00 USB PhonetOutdated
Cameras, Webcams And Scanners
SunplusIT HD WebcamCorrupted By A4tech Kl S40
Video Cards
ATI ATI Technologies, Inc. 3D RAGE PRO AGP 2XUp To Date and Functioning
Input Devices
Logitech Logitech Wheel Mouse (USB)Up To Date and Functioning
Port Devices
hspa Modem Application3 port (COM6)Corrupted By A4tech Kl S40
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
A4tech Kl S40 7046912/24/201412/28/2016a4tech_kl_s40-70469.exe92kbLenovo ThinkCentre M80, NEC PC-LS150HS1KSG, HP D5468AT-A2L a123l, IBM 8185LUZ, HP HP Compaq 6531s, Lenovo ThinkPad Z61m, HP HP Compaq nc4200, HP Pavilion zd8000, Acer Veriton S480G, Samsung SM50S, IBM 1847Y1Y, Lenovo ThinkStation S10, DEPO DEPO_VIP_M8710, NEC EASYNOTE P910R00406, HP HP Compaq nx6325, IBM 8305S8U, HP RR523AA-UUW, Sony PCG-GRX616SP, and more.
A4tech Kl S40 2.11.169811/27/201412/27/2016a4tech_kl_s40-2.11.1698.exe138kbCompaq P8657C-ABA 8000Z NA510, ASUS CM5425, HP KJ401AA-aba A6437C, Lenovo ThinkCentre Edge 71, HP PL482AA-AB4 w1084d, NEC PC-VZ500AD, Sony VGN-P92KS, Sony VGN-A290, Sony VGN-FW56E, Intel S3420GPC, HP HP Compaq nc8430, Packard Bell IMEDIA MCE 8010, Compaq Evo N610c 470054-655, Toshiba Dynabook SS S8/210LNSN, Packard Bell EASYNOTE_MX52-B-029, and more.
A4tech Kl S40 6089/12/201412/27/2016a4tech_kl_s40-608.exe155kbSony VGN-TT1, ECS SMACKER II-MS300, Intel LC-92T10, HP AY627AAR-ABA a4313w, ByteSpeed ByteSpeed Laptop UT40, NEC PC-VY25AAZR7, LG S550-GE6AK, Fujitsu PRIMERGY RX200 S7, HP HP Pavilion dv6 VS079EA#UUW, IBM IBM eServer 206m -[848510U, Biostar TA75MH2, NEC PC-VK26MDZCE, Sony VGN-NS225J, HP 500-108eo, and more.
A4tech Kl S40 1.11.10369/14/201412/27/2016a4tech_kl_s40-1.11.1036.exe86kbHP ED737AA-ABS, Panasonic CF-W8GWEYZNT, Lenovo ThinkPad T430u, Lenovo 1952T60, Fujitsu FMVNFD75R, HP HP 2000-425NR, NEC PC-VY16AEDAMFL2, IBM 841742U, Sony SVF1521R2EW, NEC PC-LL550MG1J, Seneca Pro64601, Extracomputer D2312-C2, Medion E5218, HP GG698AA-ABH, HP 23-f390, NEC RND61092195, CdcPointSpa CX-7592, HP KY731AA-AKL a6784l, and more.
A4tech Kl S40 732.1792/7/201512/29/2016a4tech_kl_s40-732.179.exe130kbPanasonic CF-30FTSAZN2, ASUS BP6260, Intel LM1WN, Mio N890, NEC VERSAE3100 NN780248559, HP PS354AA-ABX, Sony VGN-CS60B_Q, IBM ThinkPad T43, HP DW167A-ABF a425.f, Toshiba Dynabook R634/L, Lenovo ThinkCentre M72e, Sony VGC-JS94FS, Sony VGN-SZ390P, HP KJ379AAR-ABA a6400f, HP HP dx2000 MT, Toshiba SATELLITE L870-16L, HP GX611AA-ABA m8300f, Compaq RR472AA-ABF SR2102FR, NEC PC-VL750AS, and more.
A4tech Kl S40 28815AU, Lenovo ThinkPad Edge E130, ASUS 1008HA, WIPRO WSG37425W7-0012, Acer Aspire 5735Z, Toshiba Qosmio F50, Lanix LANIX CORP 4030, Packard Bell IMEDIA X5609 BE, LG P430-K.AE12B, HP KE485AA-UUZ, Compaq DD345A-ABS 6620 SV110, Sony PCG-GRX700, and more.
A4tech Kl S40 2.10342.18/27/201412/29/2016urywbzwt-2.10342.1.exe101kbLenovo 20ANCTO1WW, Toshiba Dynabook R732/E25HR, Lenovo 209024U, Gateway 510 2900039, HP HPE-350es, Biostar TForce 550, NEC PC-VY20MAZ78, Gigabyte M912, Toshiba Dynabook R731/36EBK, Fujitsu FMVLRB7N24, Packard Bell PBIPGX, Sony VGN-NR270N, HP KJ253AA-ABD, HP HPE-420f, and more.
A4tech Kl S40 4239012/11/201412/29/2016a4tech_kl_s40-42390.exe162kbToshiba Libretto U100/190DSW, HP DT172A-ABZ, Lenovo 7659V26, IBM 1871WNV, Dell PowerVault NX3100, HP Pavilion dv8000, CCEInf CDC-I, HP KN283AA-ABM s3445la, Panasonic CF-W7BWAZFBE, Sony VPCEB15FA, HP FL308AA-ABD IQ512de, HP P6-2475eo, Lenovo 6075Y5X, Fujitsu FMVNA1CC, HP P6-2201sem, Intel MGM965JB, Lenovo ThinkCentre E51, Biostar Hi-Fi B85S3, and more.
A4tech Kl S40 J227203/9/201512/27/2016lt-j22720.exe56kbHP HP Compaq nx7300, HP KB003AA-B14, Toshiba Dynabook T553/37JWB, IBM 813135U, Sony VGN-A317M, HP VS179AA-ABH p6250nl, Dialogue Flybook VM, DIXONSXP Philips Freevents, HP EC651AA-ABY, HP GL333AA-ABZ, Sony VGNFW590FPB, HP GP G62-A20SY NB, Medion MS-7667, NEC PC-MK29MLZDF, and more.
A4tech Kl S40 7082.1012/1/201412/29/2016a4tech_kl_s40-7082.10.exe169kbPackard Bell IPower X1001, Gigabyte M1028, Intel S3420GPV, Gigabyte MSH61PI-EX, Compaq GS367AA-AB4 SR5175CF, Sony VGN-TZ92S, HP Presario C300, NEC PC-GV296VZGL, HP FL422AA-ABT a6613is, Gateway GT5082B, and more.
A4tech Kl S40 3241.129/16/201412/28/2016a4tech_kl_s40-3241.12.exe97kbSamsung 900X3F, HP 1618, Medion X781X/X782X, Fujitsu FMVA54EW, Sony VGN-NR270N, Panasonic CF-30CTQCBBM, VIA 2021, IBM 28815AU, Panasonic CF-51PFDDEBM, HP HP Compaq dx6120 MT, and more.
A4tech Kl S40 Y1.148411/13/201412/27/2016a4tech_kl_s40-y1.1484.exe145kbHP HP Compaq nc8430, Packard Bell IMEDIA MCE 8010, Compaq Evo N610c 470054-655, Toshiba Dynabook SS S8/210LNSN, Packard Bell EASYNOTE_MX52-B-029, LG E500-K.APCAY, IBM 2645CBH, HP FK479AAR-ABA s3600t, NEC PC-LL700ED, Acer Aspire X1470, HP HP Compaq 6510b, Compaq DQ119A-ABZ S5400IT IT340, Fujitsu FMVNB75ST, Samsung N130, Toshiba SATELLITE C55-A-10Q, Lenovo 1S1680036940055, Acer TravelMate 8331, Dell Studio 1557, Dell Vostro 200, and more.
A4tech Kl S40 706989/10/201412/29/2016a4tech_kl_s40-70698.exe209kbGateway 510 2900039, HP PN119AA-ABU, IBM 6218Z1H, Compaq PJ385AA-ABU SR1180UK GB431, Fujitsu CELSIUS H265, Toshiba Dynabook T351/34CR, LG V960-UH50K, HP FK484AAR-ABA m9400t, HP HP Compaq 6910p, Lenovo 20AQCTO1WW, HP P6646at, Panasonic CF-S9LWGJDS, Lenovo ThinkPad T420, Lenovo 9439Y5B, LIGHTEDGE 965GFEKR, and more.
A4tech Kl S40 2.13432.111/7/201412/28/2016a4tech_kl_s40-2.13432.1.exe196kbHP P6640ch, HP PX581AA-ABE, Lenovo ThinkPad SL500, THEIS TH-P925/945G7MD-8KS2HV/1024/80/Profi-Towe, Dimotion PCDN4M38, Dell BlackfordESB2, HP RJ131AA-AB8 t3620.t, Positivo POS-EC945AL, Intel SQ45CB, HP WL327AA-ABD p6328de, Sony VPCF115FG, Fujitsu FMVNFD80N, HP EC577AA-B1U, Fujitsu S6410C, LG S1-M402E1, and more.
A4tech Kl S40 837028/22/201412/28/2016a4tech_kl_s40-83702.exe59kbHP PN089AA-ABF m1180.f, Panasonic CF-19KHRAXAM, Toshiba Satellite A100-999, Lenovo ThinkCentre M92p, IBM 8213WCM, HP NC047AA-ABU s3714uk, Lenovo ThinkPad L512, Sony SVS1312AJA, ICP / IEi AFL-W19B-GM45, Sony VGN-UX1XN, Lenovo ThinkCentre A70z, Medion E5217, IBM 811314U, LG R410-L.A2BME8, and more.
A4tech Kl S40 71.103710/17/201412/28/2016a4tech_kl_s40-71.1037.exe197kbSony VPCX115LW, Lenovo 7360W78, IBM 8183Z2C, Acer TravelMate 2460, IBM 8086Y27, SAMSUN M2410, Gateway MX6627, Sony SVP1322R4RBI, Fujitsu FMVA42EWKS, Sony VGN-SZ71E_B, Toshiba SATELLITE C50-A-14V, Sony VGN-SZ15LP_B, Lenovo ThinkPad X301, Olidata OLIDATA, TriGem LLUON-A1, HP HP ENVY TS 17 Notebook PC, HP Pavilion dv6000, HP HP Pavilion dv8000, Lenovo ThinkServer TS430, and more.
A4tech Kl S40 31.1982.12/26/201512/27/2016a4tech_kl_s40-31.1982.1.exe126kbAcer Aspire 5672, IBM 8172QGW, Lenovo ThinkServer TS430, Toshiba Dynabook R731/36EBK, NEC PC-VJ25AAN6HJR9, LG LW65-K5JY, Velocity Micro CINEMAGIX, HP FJ377AA-ABF a6538.f, Toshiba TECRA A2, HP VD019AA-UUW p6110sc, Panasonic CF-S8HYEDPS, Toshiba Dynabook Qosmio T851/D8EB, LG LE50-5B142T, HP KY787AA-AKL p6172l, Toshiba Satellite C850-B124, Compaq ED879AA-ABA SR1638NX NA540, Buympc ClientPro 385 ADMC2, and more.
A4tech Kl S40 1.12202/9/201512/29/2016a4tech_kl_s40-1.1220.exe46kbHP HP PAVILION DV9000, IBM System x3550 M3 -[7944PAA, Lenovo ThinkCentre M90z, TYAN S2895, HP KT435AA-AB3 IQ508d, Lenovo 37612EG, Sony VGN-TZ15AN, HP NP169AA-ABM p6130la, LG R490-K.ARCWE1, NEC VERSAE6300 RNF91086795, Packard Bell ISTART 2234, VIA VT8653-8233, and more.
A4tech Kl S40 1.1201/10/201512/30/2016tn-1.120.exe88kbPanasonic CF-74KCJDZAM, HP S5-1435d, Sony VGN-NS72JB_W, SAMSUN 350V, Acer A7600U, Sony VGN-CS26G_C, Fujitsu CELSIUS R920 POWER, Lenovo 6072Y76, Medion P6612, Lenovo ThinkCentre M57, Sony SVE151100C, HP HP Compaq dc5100 SFF, HCL Infosystems LUMINA2-LD, HP PAVILION DV8000, and more.
A4tech Kl S40 731.16611/27/201412/28/2016a4tech_kl_s40-731.166.exe174kbToshiba Dynabook EX1/524CDE, Buympc MPC365, Lenovo ThinkCentre M70e, IBM 8215A64, ECS Z77H2-A2X Deluxe, Toshiba Dynabook R822/WT9GS, EUROCOM Panther 5D, Intel D965MTW, IBM IBM eServer 206m -[848510U, Compaq Presario 1201EA 470019-012, Packard Bell PACKARD BELL IMAX X7300 SP, and more.

Please Note: There are particular operating systems known to have problems with A4tech Kl S40:
  • Windows Vista Business
  • Windows 7 Professional
  • Windows XP Professional x64 Edition
  • Windows 7 Ultimate
  • Windows 7 Service Pack 1 (Microsoft Windows NT)
  • Windows 7 Enterprise (Microsoft Windows NT)
  • Windows XP Media Center Edition
  • Windows 8
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific A4tech Kl S40 model.
Laptop A4tech Kl S40Tablet A4tech Kl S40Download A4tech Kl S40Upgrade A4tech Kl S40Update A4tech Kl S402017 A4tech Kl S40Free A4tech Kl S40Data A4tech Kl S40Info A4tech Kl S40Help A4tech Kl S40Guide A4tech Kl S40Comments A4tech Kl S40Windows 10 A4tech Kl S40Vista A4tech Kl S40Windows 7 A4tech Kl S40Install A4tech Kl S40