2/19/2017 new driver models for direct download:967
A4tech Op-20 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for A4tech Op-20
Certifications for A4tech Op-20
5 stars for A4tech Op-20 "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 2/19/2017 Updates

All drivers on are updated on daily basis.

However, a new version of A4tech Op-20 might have been uploaded since our last site update.

A4tech Op-20 Driver Download

Windows Compatibility for A4tech Op-20 driver

A4tech Op-20 Driver Details:

A4tech Op-20 File Name:

A4tech Op-20 Driver Version: 643hW1

A4tech Op-20 ZIP Size: 115.kb

Manufacturer: A4tech

A4tech Op-20 was fully scanned at: 2/17/2017
Scan Status: driver download scanOK

A4tech Op-20 special revision for: Windows 10 64 bit, Windows XP Media Center Edition 64 bit, Windows Vista Business 64 bit, Windows Vista Enterprise (Microsoft Windows NT 6.0.6000.0) 32 bit, Windows XP Professional N 64 bit, Windows 7 Enterprise (Microsoft Windows NT) 64 bit, Windows 7 Home Premium 32 bit, Windows XP 64-bit Edition 64 bit, Windows 7 Starter 32 bit, Windows XP Media Center Edition 32 bit

A4tech Op-20 Download Stats:

Driver Uploaded: 2/4/2017

Direct Downloads: 6014
Most Recent Download: 2/18/2017
Managed Downloads: 2194
Most Recent Download: 2/17/2017
Download Mirrors: 3
Current Delay: 7 Seconds
Driver License: Free to the general public

Direct Download Success Stats:

Reports Issued By 4737/6014 Users

Success Reported By 1256/4737 Users

Driver Download Score69/100

Driver Installation Score72/100

Overall preformance Score64/100

A4tech Op-20 599 Thumbs Up599Thumbs
A4tech Op-20 145 Thumbs Down145Thumbs
A4tech Op-20 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 1731/2194 Users

Success Reported By 1384/1731 Users

Driver Download Score83/100

Driver Installation Score76/100

Overall preformance Score93/100

A4tech Op-20 1319 Thumbs Up1319Thumbs
A4tech Op-20 150 Thumbs Down150Thumbs
A4tech Op-20 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 Op-20 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 Op-20 + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing A4tech Op-20, 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 Op-20 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 Op-20 disfunctions.

Scan performed on 2/19/2017, Computer: Akerstroms Tx700

Outdated or Corrupted drivers:12/21

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel(R) E8500/E8501 Registers - 2613Corrupted By A4tech Op-20
Mice And Touchpads
Logitech HID-compliant muisCorrupted By A4tech Op-20
Microsoft Microsoft USB IntelliMouse WebCorrupted By A4tech Op-20
Usb Devices
Canon USB Printing SupportCorrupted By A4tech Op-20
Hewlett-Packard HP Photosmart 6510 series (REST)Up To Date and Functioning
Sound Cards And Media Devices
Realtek AzureWave AW-CA100/100DOutdated
Network Cards
Microsoft SiS191-Ethernet-controllerUp To Date and Functioning
Microsoft Keyboard Device FilterUp To Date and Functioning
Hard Disk Controller
NVIDIA NVIDIA MCP51 Serial ATA ControllerCorrupted By A4tech Op-20
Initio Initio Default ControllerOutdated
Western Digital WD SES Device USB DeviceOutdated
Texas Instruments Texas Instruments PCI-4510 CardBus ControllerUp To Date and Functioning
Point Grey Research OHCI-konformer Texas Instruments 1394-HostcontrollerUp To Date and Functioning
Western Digital My Net N900 Router StorageOutdated
National IrDA Fast Infrared PortUp To Date and Functioning
Cameras, Webcams And Scanners
EPSON EPSON Stylus CX6400Outdated
Video Cards
Intel(R) HD GraphicsUp To Date and Functioning
Input Devices
KME USB Human Interface DeviceCorrupted By A4tech Op-20
Port Devices
D-Link USB Single PortCorrupted By A4tech Op-20
Sony Digital Flat Panel (1024x768)Up To Date and Functioning
Mobile Phones And Portable Devices
Acer NOKIAUp To Date and Functioning

Scan performed on 2/19/2017, Computer: Acer Aspire 1820PT

Outdated or Corrupted drivers:8/19

Device/DriverStatusStatus DescriptionUpdated By Scanner
Microsoft Intel(R) 82801BA LPC Interface Controller - 2440Up To Date and Functioning
Mice And Touchpads
Microsoft Microsoft Arc Mouse (IntelliPoint)Corrupted By A4tech Op-20
Microsoft Logitech USB WheelMouseUp To Date and Functioning
Usb Devices
Microsoft Standard Universal PCI to USB Host ControllerUp To Date and Functioning
Cypress Generic USB HubCorrupted By A4tech Op-20
Sound Cards And Media Devices
NVIDIA NVIDIA GeForce GTX 675MUp To Date and Functioning
Broadcom Audio Bluetooth.Up To Date and Functioning
AMD AMD SATA ControllerUp To Date and Functioning
Network Cards
Qualcomm Qualcomm Gobi 2000 HS-USB Mobile Broadband Device 9225Up To Date and Functioning
Microsoft HID KeyboardUp To Date and Functioning
Hard Disk Controller
Intel Intel(r) 82801BA Bus Master IDE ControllerOutdated
Nokia Nokia 5230 USB LCIFOutdated
SMSC SMSC Fast Infrared DriverOutdated
Cameras, Webcams And Scanners
Canon Canon MP160Up To Date and Functioning
Video Cards
ATI RADEON X600 Series Secondary (Microsoft Corporation - WDDM)Up To Date and Functioning
Input Devices
Logitech USB Input Device (Logitech Download Assistant)Corrupted By A4tech Op-20
Port Devices
Mobile Connector Device Application Interface (COM12)Up To Date and Functioning
Sony Digital Flat Panel (1024x768)Corrupted By A4tech Op-20
Mobile Phones And Portable Devices
Acer NOKIAOutdated
Driver ModelOriginal Upload DateLast ModificationDriver FileFile SizeCompatible Computer ModelsAvailabilty To Instalation Manager
A4tech Op-20 8341.11.11/6/201512/30/2016a4tech_op-20-8341.11.1.exe146kbNEC POWERMATE RD3911294AD, HP RR455AA-ABF t3727.f, Dell OptiPlex 330, Sony VPCW211AD, Fujitsu MS-6318, NEC VERSAE6200 RNC71101895, KBS 7Eve, Mitsubishi CX25XCZOTSBF, Fujitsu FMVNP2HT3A, Sony VPCF12YFX, Compaq GC668AAR-ABA SR5110NX, Sony VPCSB3AJ, and more.
A4tech Op-20 1.10941.12/15/201512/29/2016a4tech_op-20-1.10941.1.exe27kbSony VGN-AR51J, IBM System x3650 M3 -[7945K4G, Fujitsu FMVNF50WWJ, Panasonic CF-53AACZYFT, IBM 26486G1, NEC PC-VY21MED5HJW6, HP EY906AA-ABZ, Sony VGN-NW235F, WIPRO WSG37455W7-0092, HP Pavilion ze4600, Toshiba TECRA A2, HP BT597AA-ABA s5604f, Sony VPCF13WFX, HP HP nx9010, Sony VGN-FJ78SP_W, HP HP Pavilion dv9700, Compaq Presario 6330CA, and more.
A4tech Op-20 I232.17411/20/201412/29/2016a4tech_op-20-i232.174.exe159kbFujitsu PRIMERGY TX150, IBM 621936U, IBM 8212K4U, Panasonic CF-72TCJWZPM, IBM 6830TBG, HP 810-019eb, IBM EServer xSeries 365 -[88625RX, Notebook MIM 2270, Fujitsu ESPRIMO Mobile X9515, Advent DT1404, Sony VGC-LT1S, Gigabyte H61M-USB3-B3, Toshiba PT10ABX, Toshiba Dynabook Qosmio F20/590LS, Sony SVE15127CAP, Gateway GT5418E, Lenovo ThinkCentre Edge 72z, Sony VGN-BX745FN, and more.
A4tech Op-20 O2.130883/9/201512/30/2016a4tech_op-20-o2.13088.exe58kbNEC EASYNOTE P910R00406, HP G5406f, MCJ AMIS, Toshiba SATELLITE C850-A791, Toshiba Dynabook Qosmio D710/T5BB, HP DV6 - 3206AX, Lenovo ThinkPad Edge E220s, HP ProLiant DL360 G3, IBM Eserver xSeries 235 -[8671KAX, Fujitsu FMVA42EWKS, Toshiba SATELLITE PRO C870-1C4, Clevo P15xEMx, IBM 8114WGZ, Lenovo SS09355260, IBM BladeCenter HS22 -[7870B4U, ASUS VX5, Lenovo ThinkCentre M70e, IBM 847691U, Sony VPCF115FG, and more.
A4tech Op-20 2.1067411/14/201412/28/2016a4tech_op-20-2.10674.exe98kbToshiba Dynabook SS M41 200E/3W, IBM 187134M, SIEMENS SIMATIC IPC647C PROFINET, Anhoch Goliath XD810, SAMSUN R610, Olidata IPMIP-GS H57, ITSUMI ADAX, HP NC896AAR-ABA a6863w, IBM System x3200 M3 -[7328K3G, HP P6732de, IBM 26478PU, HP 23-d050xt, LG G1-223YA2, and more.
A4tech Op-20 X6020710/31/201412/27/2016a4tech_op-20-x60207.exe153kbMouseComputer H87M-S01, NOVATECH BB-4770C, Sony VGN-P50_G, Fujitsu FMVNT5FT4, Gigabyte S11M, Lenovo ThinkPad SL500c, IBM 2647LG7, HP DT180A-ABF t490.f, Fujitsu FMVCE80T7, HP GN634AV-ABA a6210, Sony SVE14112ENB, Sony SVS1312AJA, Toshiba SATELLITE PRO T130, Compaq GC662AA-ABA SR5113WM, IBM 8114WGZ, and more.
A4tech Op-20 1.1247312/19/201412/27/2016a4tech_op-20-1.12473.exe185kbPackard Bell Imedia S3270, HP HP Compaq nx6325, ACTION MONTANA W7HP, Panasonic CF-30KCPRQAM, Supermicro X7DBP, HP GQ524AA-ABE, HP NC829AAR-ABA a6857c, LG K1-2249A9, HP NY545AAR-ABA p6210y, Lenovo IdeaPad S10e, Lenovo ThinkPad W520, Sony VGN-BX745FN, Fujitsu FMVNR1PH, and more.
A4tech Op-20 31.11.17012/12/201412/27/2016a4tech_op-20-31.11.170.exe47kbSony VPCEJ2S1R, Samsung SQ45S70S, MSI MS-6508, HP 23-b232e, Sony VPCM126AA, FIC ATM-Q45G, Dell Studio 1457, Acer TravelMate 8571, Panasonic CF-30KTPAX2B, Fujitsu MS-6318, HP Compaq CQ62, Gigabyte EP43C-DS3, and more.
A4tech Op-20 83041.11/3/201512/27/2016a4tech_op-20-83041.1.exe124kbPackard Bell IMEDIA I4580 FR, Dell Vostro 1440, Compaq Presario 6330CA, Acer MX4SG-4DL, Lenovo ThinkPad T420s, Toshiba Satellite C870-DMK, Shuttle XG41, HP EG211AA-ABG m7288a, IBM 8212H1U, HP P6540d, HP HP Pavilion dv5 Notebook PC, MSI MS-16GN, Sony VGN-SZ6RXN_C, IBM IBM eServer 206m -[848510U, Sony SVP1322R4RBI, IBM 819437U, and more.
A4tech Op-20 1.178311/7/201412/27/2016a4tech_op-20-1.1783.exe84kbCompaq PX734AA-ABA a123l NA520, ASUS PRDLS533, NOVATECH MBB-44308D, Panasonic CF-53JAWZYDE, Sony VGN-NS72JB_W, Toshiba SATELLITE PRO C50-A-1M3, Seneca PRO0542, IBM 2889CG6, Lenovo SS09302455, Gateway GT5418E, HP EC651AA-ABY, Gateway MX8734, HP KX614AA-B1A a6502.g, Acer TravelMate 250, Prosys Prosys, AT ALSEN, and more.
A4tech Op-20 C2.1042.198/27/201412/27/2016a4tech_op-20-c2.1042.19.exe107kbSony VGN-UX90S, LG LE50-23SK, Dedicated OEM-A4501-00, Packard Bell IPower I9810 GE, IBM 81712EU, HP P7-1012, Fujitsu FMVNFD75RG, Panasonic CF-52GCR42AG, HP HPE-420f, IBM 2647LG7, IBM 2373ZTS, Dell Inspiron N5040, IBM 8099KKB, Sony VGN-SZ140, EMachines EL1200-06w, and more.
A4tech Op-20 H632608/30/201412/27/2016a4tech_op-20-h63260.exe78kbToshiba TECRA A2, HP BT597AA-ABA s5604f, Sony VPCF13WFX, HP HP nx9010, Sony VGN-FJ78SP_W, HP HP Pavilion dv9700, Compaq Presario 6330CA, Lenovo ThinkCentre M55, Haier T68 Series, HP RF772AA-ABF t3611.f, and more.
A4tech Op-20 801.19312/27/201412/29/2016a4tech_op-20-801.193.exe31kbSony VGN-FW17_B, MSI MS-6163, LG R590-PARU1BT, NEC PC-VW978WG01, Panasonic CF-Y2FW7AXS, Hercules EC-900, HP KX781AV-ABJ p6120jp, Sony VGN-TT46MG_B, LG X110-L.A7B1A2, IBM ThinkCentre A51, Panasonic CF-52RE301QW, Haier T5B, HP HDX9300, HP HP dc5000 uT, and more.
A4tech Op-20 623799/27/201412/29/2016a4tech_op-20-62379.exe86kbHP XXX, EMachines L4030, IBM 2658MJJ, IBM 26478PU, NEC PC-VN470GS6R, TBD K8A8X-M, Lenovo ThinkPad T500, Compaq Presario 6266EA, HP H8-1041, CDM K9A2VM-FD R01, NEC PC-LL350DD1KS, HP NQ983AA-ABZ p6028it, IBM 9210WLV, HP Pavilion ZV6100, Packard Bell EASYNOTE_MX52-B-070, MSI SO-7597, and more.
A4tech Op-20 2.11.186811/24/201412/30/2016a4tech_op-20-2.11.1868.exe31kbCompaq BT466AA-ACJ CQ3211IX, HP AV890AV-ABJ e9280jp, WIPRO WSG48105V-0015, HP Pavilion ZV6100, Samsung R710, PASCAL PT880PRO-PS, Sony VGN-C140FP, HP VC893AA-ABF s5108f, Lenovo ThinkPad X230, Toshiba SATELLITE C660-1VR, Toshiba Dynabook R634/E25K, Sony VGN-CS15GN_B, HP Compaq Mozart CQ50-112eo, Lenovo 20AL009CUS, ASUS R052CE, and more.
A4tech Op-20 404011/20/201412/29/2016a4tech_op-20-4040.exe39kbPCSMART PTI1010, Compaq EJ284AA-ABF SR1622FR FR540, Fujitsu FMVNR9P2C, HP KB010AA-AKB a6330.cs, Compaq FQ552AA-ABA SR5616F, NEC PC-GV286GLGL, HASEE QJC4, IBM 842777G, KONTRON B649, TriGem AVERATEC, HP FL402AA-ABZ s3630it, Toshiba SATELLITE C855-20M, Sony VPCF136FX, HP VG123AA-ABF p6127f, Fujitsu ESPRIMO E7935, Sony VPCEH40EBW, Gigabyte S11M, and more.
A4tech Op-20 31.141.179/2/201412/27/2016a4tech_op-20-31.141.17.exe74kbHP PN119AA-ABU, NEC PC-VJ22MAUEHTXV, IBM IBM System x3400 M3 Server -[7379AC1, Packard Bell IMEDIA B2501 BE, IBM 831136U, Fujitsu AMILO Xi 2528, Toshiba SATELLITE L870-16L, HP H8-1445, Panasonic CF-28PTJGZDM, Intel LC-92T10, Lenovo ThinkPad X121e, and more.
A4tech Op-20 221.171.13/8/201512/30/2016a4tech_op-20-221.171.1.exe77kbHP G5148it-m, HP Compac Presario CQ57 Notebook PC, Fujitsu FMVNFC50WG, IBM 62253J9, AT ALSEN PROFI 41G, Acer TravelMate 3290, Gateway GT5228J, AT ALSEN, Lenovo ThinkCentre M75e, LG R580-UP87K, and more.

Please Note: There are particular operating systems known to have problems with A4tech Op-20:
  • Windows XP Media Center Edition 2004
  • Windows Fundamentals for Legacy PCs
  • Windows Vista Starter
  • Windows XP Tablet PC Edition
  • Windows 7 Professional
  • Windows 10
  • Windows 7 Ultimate
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific A4tech Op-20 model.
Laptop A4tech Op-20Tablet A4tech Op-20Download A4tech Op-20Upgrade A4tech Op-20Update A4tech Op-202017 A4tech Op-20Free A4tech Op-20Data A4tech Op-20Info A4tech Op-20Help A4tech Op-20Guide A4tech Op-20Comments A4tech Op-20Windows 10 A4tech Op-20Vista A4tech Op-20Windows 7 A4tech Op-20Install A4tech Op-20