5/22/2018 +627 new drivers.
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 7/18/2016
Our main support OS are: Windows 7, Windows 7 64 bit, Windows 7 32 bit, Windows 10, Windows 10 64 bit, Windows 10 32 bit, and Windows 8.

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: 5/16/2018
Scan Status: driver download scanOK

A4tech Op-20 now has a special edition for these Windows versions: Windows 7, Windows 7 64 bit, Windows 7 32 bit, Windows 10, Windows 10 64 bit,, Windows 10 32 bit, Windows 8, Windows 10 Home 64bit, Windows Vista Home Premium 64bit, Windows RT 64bit, Windows 7 Starter 32bit, Windows 7 Service Pack 1 (Microsoft Windows NT) 64bit, Windows 10 S 64bit, Windows 10 Mobile Enterprise 32bit, Windows XP Home Edition, for home desktops and laptops 64bit, Windows 10 Pro Education 32bit, Windows Vista Home Premium 32bit,

A4tech Op-20 Download Stats:

Driver Uploaded: 4/1/2018

Direct Downloads: 6762
Most Recent Download: 4/26/2018
Managed Downloads: 2466
Most Recent Download: 4/24/2018
Download Mirrors: 3
Current Delay: 27 Seconds
Driver License: Free to the general public

Direct Download Success Stats:

Reports Issued By 5111/6762 Users

Success Reported By 1219/5111 Users

Driver Download Score69/100

Driver Installation Score72/100

Overall preformance Score64/100

A4tech Op-20 633 Thumbs Up633Thumbs
A4tech Op-20 131 Thumbs Down131Thumbs
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 2347/2466 Users

Success Reported By 1964/2347 Users

Driver Download Score83/100

Driver Installation Score76/100

Overall preformance Score93/100

A4tech Op-20 1929 Thumbs Up1929Thumbs
A4tech Op-20 113 Thumbs Down113Thumbs
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.

Other drivers most commonly associated with A4tech Op-20 problems:

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 4/25/2017, Computer: HP FK785AAR-ABA s3620f - Windows 7 64 bit

Outdated or Corrupted drivers:10/23

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel(R) ICH9M/M-E 2 port Serial ATA Storage Controller 1 - 2928Up To Date and Functioning
Mice And Touchpads
WheelMouse USB Advanced Wheel MouseCorrupted By A4tech Op-20
HP HID-compliant muisCorrupted By A4tech Op-20
Elo TouchSystems Elo Serial Touchmonitor InterfaceUp To Date and Functioning
Usb Devices
Hewlett-Packard hp psc 1300 series (DOT4USB)Up To Date and Functioning
Intel Pont ISA standard PCIUp To Date and Functioning
SusTeen SAMSUNG Mobile USB DeviceUp To Date and Functioning
Sound Cards And Media Devices
Logitech USB Audio DeviceCorrupted By A4tech Op-20
NVIDIA MPU-401 Compatible MIDI DeviceCorrupted By A4tech Op-20
Network Cards
Qualcomm Atheros Atheros AR5005G Wireless Network AdapterCorrupted By A4tech Op-20
Microsoft HID KeyboardUp To Date and Functioning
Hard Disk Controller
ALi Coporation ALi M5229 PCI-Bus-Master-IDE-ControllerUp To Date and Functioning
Point Grey Research Texas Instruments OHCI-konformer IEEE 1394-HostcontrollerCorrupted By A4tech Op-20
Brother USB Printing SupportUp To Date and Functioning
NEC Generic CardBus ControllerUp To Date and Functioning
Nokia Nokia 5230 USB LCIFCorrupted By A4tech Op-20
ACEECA Palm HandheldUp To Date and Functioning
Cameras, Webcams And Scanners
Canon CanoScan 3200/3200FUp To Date and Functioning
Video Cards
ATI RADEON X600 Series (Microsoft Corporation - WDDM)Up To Date and Functioning
Input Devices
GENERIC USB Human Interface DeviceOutdated
Port Devices
D-Link MT65xx PreloaderUp To Date and Functioning
Sony Digital Flat Panel (1024x768)Corrupted By A4tech Op-20
Mobile Phones And Portable Devices
Acer NOKIAOutdated

Scan performed on 4/24/2018, Computer: EMachines EMachines G420 - Windows 7 32 bit

Outdated or Corrupted drivers:5/18

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel(R) 82801FBM LPC Interface Controller - 2641Up To Date and Functioning
Mice And Touchpads
Synaptics Mouse compatible PS/2Up To Date and Functioning
Usb Devices
Texas Instruments Texas Instruments USB Root HubUp To Date and Functioning
Motorola Motorola USB DeviceUp To Date and Functioning
VIA VIA USB eXtensible Host ControllerCorrupted By A4tech Op-20
Sound Cards And Media Devices
Motorola Motorola Messenger Modem Audio DeviceUp To Date and Functioning
Network Cards
Intel(R) Wireless-N 7260Up To Date and Functioning
Microsoft Keyboard Device FilterUp To Date and Functioning
Hard Disk Controller
Advanced Micro Devices Standard Dual Channel PCI IDE ControllerUp To Date and Functioning
Western Digital My Net N900 Router StorageUp To Date and Functioning
Nokia Nokia 5230 USB Phone ParentCorrupted By A4tech Op-20
Google Nexus 4Corrupted By A4tech Op-20
Cameras, Webcams And Scanners
Importek USB Composite DeviceCorrupted By A4tech Op-20
Video Cards
ATI ATI MOBILITY RADEON 9600/9700 SeriesOutdated
Input Devices
Logitech Logitech Optical Tilt Wheel MouseUp To Date and Functioning
Port Devices
Microsoft Communications Port (COM1)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 ModelOSOriginal Upload DateLast ModificationDriver FileFile SizeCompatible Computer ModelsAvailabilty To Instalation Manager
A4tech Op-20 8341.11.1For Windows 7 32 bit1/6/201512/30/2016all_drivers-8341.11.1.exe146kbNEC POWERMATE RD3911294AD, HP RR455AA-ABF t3727.f, Dell OptiPlex 330, Sony VPCW211AD, Fujitsu MS-6318, NEC VERSAE6200 RNC71101895, and more.
A4tech Op-20 1.10941.1For Windows 7 64 bit2/15/201512/29/2016all_drivers-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, and more.
A4tech Op-20 I232.174For Windows 711/20/201412/29/2016all_drivers-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, and more.
A4tech Op-20 O2.13088For Windows 103/9/201512/30/2016all_drivers-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, and more.
A4tech Op-20 2.10674For Windows 10 64 bit11/14/201412/28/2016all_drivers-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, and more.
A4tech Op-20 X60207For Windows 7 32 bit10/31/201412/27/2016all_drivers-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, and more.
A4tech Op-20 1.12473For Windows 7 64 bit12/19/201412/27/2016all_drivers-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, and more.
A4tech Op-20 31.11.170For Windows 712/12/201412/27/2016all_drivers-31.11.170.exe47kbSony VPCEJ2S1R, Samsung SQ45S70S, MSI MS-6508, HP 23-b232e, Sony VPCM126AA, FIC ATM-Q45G, and more.
A4tech Op-20 83041.1For Windows 101/3/201512/27/2016all_drivers-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, and more.
A4tech Op-20 1.1783For Windows 10 64 bit11/7/201412/27/2016all_drivers-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, and more.
A4tech Op-20 C2.1042.19For Windows 88/27/201412/27/2016all_drivers-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, and more.
A4tech Op-20 H63260For Windows 7 32 bit8/30/201412/27/2016all_drivers-h63260.exe78kbToshiba TECRA A2, HP BT597AA-ABA s5604f, Sony VPCF13WFX, HP HP nx9010, and more.
A4tech Op-20 801.193For Windows 7 64 bit12/27/201412/29/2016all_drivers-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, and more.

Please Note: There are particular operating systems known to have problems with A4tech Op-20:
  • Windows Vista Ultimate
  • Windows XP Professional
  • Windows 8
  • Windows Vista Home Basic
  • Windows 10 IoT
  • Windows 10 Home
  • Windows 10 Team
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.
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