3/30/2017 new driver models for direct download:881
A4tech Rfkbs-21 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for A4tech Rfkbs-21
Certifications for A4tech Rfkbs-21
5 stars for A4tech Rfkbs-21 "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 3/30/2017 Updates

All drivers on are updated on daily basis.

However, a new version of A4tech Rfkbs-21 might have been uploaded since our last site update.

A4tech Rfkbs-21 Driver Download

Windows Compatibility for A4tech Rfkbs-21 driver

A4tech Rfkbs-21 Driver Details:

A4tech Rfkbs-21 File Name:

A4tech Rfkbs-21 Driver Version: 637C4

A4tech Rfkbs-21 ZIP Size: 118.kb

Manufacturer: A4tech

A4tech Rfkbs-21 was fully scanned at: 3/27/2017
Scan Status: driver download scanOK

A4tech Rfkbs-21 special revision for: Windows XP Media Center Edition 2004 64 bit, Windows XP Home Edition N 32 bit, Windows Vista Enterprise (Microsoft Windows NT 6.0.6000.0) 64 bit, Windows XP Media Center Edition 32 bit, Windows XP Media Center Edition 64 bit, Windows 7 Ultimate 32 bit, Windows Vista Home Premium 32 bit, Windows XP Home Edition, for home desktops and laptops 64 bit, Windows 8 Enterprise 64 bit, Windows Vista Home Basic 32 bit, Windows Vista Business 32 bit, Windows 10 64 bit, Windows XP Media Center Edition 2003 64 bit, Windows RT 64 bit

A4tech Rfkbs-21 Download Stats:

Driver Uploaded: 2/18/2017

Direct Downloads: 585
Most Recent Download: 3/28/2017
Managed Downloads: 4099
Most Recent Download: 3/28/2017
Download Mirrors: 5
Current Delay: 28 Seconds
Driver License: Free

Direct Download Success Stats:

Reports Issued By 514/585 Users

Success Reported By 85/514 Users

Driver Download Score73/100

Driver Installation Score68/100

Overall preformance Score73/100

A4tech Rfkbs-21 36 Thumbs Up36Thumbs
A4tech Rfkbs-21 7 Thumbs Down7Thumbs
A4tech Rfkbs-21 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 4026/4099 Users

Success Reported By 3770/4026 Users

Driver Download Score97/100

Driver Installation Score84/100

Overall preformance Score81/100

A4tech Rfkbs-21 3591 Thumbs Up3591Thumbs
A4tech Rfkbs-21 92 Thumbs Down92Thumbs
A4tech Rfkbs-21 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 Rfkbs-21 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 Rfkbs-21 + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing A4tech Rfkbs-21, 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?
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A4tech Rfkbs-21 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 Rfkbs-21 disfunctions.

Scan performed on 3/30/2017, Computer: NEC PC-LL708WJ01B

Outdated or Corrupted drivers:14/22

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel(R) 82801FB/FBM PCI Express Root Port - 2666Up To Date and Functioning
Mice And Touchpads
WheelMouse HID-compliant mouseCorrupted By A4tech Rfkbs-21
Usb Devices
ASMedia ASMedia XHCI 1.0 ControllerCorrupted By A4tech Rfkbs-21
ASMedia USB Root HubUp To Date and Functioning
Microsoft Intel(r) 82801DB/DBM USB Universal Host Controller - 24C4Up To Date and Functioning
Sound Cards And Media Devices
Toshiba TOSHIBA USB ISDB-T TV Tuner(x64)Corrupted By A4tech Rfkbs-21
NVIDIA NVIDIA GeForce GT 635MCorrupted By A4tech Rfkbs-21
Microsoft Cinema - Microsoft LifeCam.Corrupted By A4tech Rfkbs-21
Network Cards
VIA VIA Rhine II Fast Ethernet AdapterOutdated
Microsoft Keyboard Device FilterCorrupted By A4tech Rfkbs-21
Hard Disk Controller
Toshiba TOSHIBA SD Memory Card DriveCorrupted By A4tech Rfkbs-21
Hewlett-Packard psc 1200 (DOT4)Up To Date and Functioning
Intel Intel(r) AIM External Flat Panel Driver 1Up To Date and Functioning
Nokia Nokia USB OBEXUp To Date and Functioning
Intel Intel(r) AIM External TV Encoder Driver 1Up To Date and Functioning
Point Grey Research Texas Instruments OHCI-konformer IEEE 1394-HostcontrollerCorrupted By A4tech Rfkbs-21
Cameras, Webcams And Scanners
Canon Canon MP160Up To Date and Functioning
Video Cards
ATI ATI Technologies, Inc. 3D RAGE PRO AGP 2XOutdated
Input Devices
Sony Sony Programmable I/O Control DeviceCorrupted By A4tech Rfkbs-21
Port Devices
PROLiNK PROLiNK Diagnostics Device (COM8)Corrupted By A4tech Rfkbs-21
Sony Digital Flat Panel (1024x768)Corrupted By A4tech Rfkbs-21
Mobile Phones And Portable Devices
Acer NOKIACorrupted By A4tech Rfkbs-21

Scan performed on 3/30/2017, Computer: Acer Aspire 1425P

Outdated or Corrupted drivers:6/20

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel(R) 82852/82855 GM/GME to Processor I/O Controller - 3580Up To Date and Functioning
Mice And Touchpads
Wacom Wacom MouseOutdated
Wacom HID-compliant deviceOutdated
Usb Devices
Hewlett-Packard HP Deskjet D2600 (DOT4USB)Up To Date and Functioning
Research In Motion Smartphone BlackBerryUp To Date and Functioning
Silicon Integrated SiS 7002 USB 2.0 Enhanced Host ControllerCorrupted By A4tech Rfkbs-21
Sound Cards And Media Devices
Pixela Sony Digital TV TunerUp To Date and Functioning
NVIDIA NVIDIA GeForce GTX 570Up To Date and Functioning
YUAN High-Tech Development YUAN MC763M/MC763H Hybrid Analog/DVB-TCorrupted By A4tech Rfkbs-21
Network Cards
Qualcomm Atheros Qualcomm Atheros AR956x Wireless Network AdapterUp To Date and Functioning
Microsoft HID KeyboardUp To Date and Functioning
Hard Disk Controller
Intel(R) 82801BA Ultra ATA Storage Controller - 244BUp To Date and Functioning
Intel Intel(r) AIM External Flat Panel Driver 5Outdated
AuthenTec Biometric CoprocessorUp To Date and Functioning
Cameras, Webcams And Scanners
Microsoft USB Video DeviceUp To Date and Functioning
Video Cards
NVIDIA NVIDIA GeForce4 MX 440Up To Date and Functioning
Input Devices
GENERIC USB Human Interface DeviceUp To Date and Functioning
Port Devices
MediaTek DA USB VCOM Port (COM11)Corrupted By A4tech Rfkbs-21
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 Rfkbs-21 V7229812/13/201412/29/2016a4tech_rfkbs-21-v72298.exe64kbASUS 1005HA, Packard Bell IMEDIA MC 8236, Fujitsu FMVNX95SD, IBM 9210WLV, Sony VGN-FE17SP, Sony VGC-JS51B_P, RIOWORKS HDAMB, IBM ThinkPad X41, and more.
A4tech Rfkbs-21 81.13262/15/201512/27/2016a4tech_rfkbs-21-81.1326.exe198kbDK Digital EXentia, Sony VGN-TZ27GN_B, IBM 26476AG, Acer Aspire 5735Z, and more.
A4tech Rfkbs-21 2291.1311/24/201412/27/2016a4tech_rfkbs-21-2291.13.exe39kbToshiba Satego P100, IBM IBM System x3400 M3 Server -[7379AC1, Compaq DT203A-ABF S6400FR FR410, Fujitsu FMVNB70E, Lenovo ThinkPad X130e, Lenovo 6458V35, Lenovo ThinkPad X220, HP P6570jp, and more.
A4tech Rfkbs-21 2.11.124811/2/201412/28/2016fnmxjy-2.11.1248.exe205kbIBM 8184LG1, NEC PC-VN470GS6R, Acer Aspire 3660, Panasonic CF-53AAC01FE, Toshiba SATELLITE C870-162, Gigabyte Z97X-UD5H, LG R510-S.AP87K, HP 610-1130uk, Lenovo 9174Y1A, Sony VGN-CS325J, and more.
A4tech Rfkbs-21 I82321.12/27/201512/30/2016a4tech_rfkbs-21-i82321.1.exe182kbGateway PROFILE3, Fujitsu FMVFE90DBY, Lenovo ThinkPad Edge E320, Toshiba Dynabook T552/36FWK, Fujitsu FMVD94G041, Compaq NQ905AA-ABU CQ5012UK, Sony VGN-NS31MT_S, Sony PCV-RS216, Lenovo 20AL009CUS, HP 220-1100t, Sony VGN-SR28_Q, and more.
A4tech Rfkbs-21 K221.12.1010/1/201412/29/2016p-k221.12.10.exe149kbHP CQ2800EEm, Sony VGN-AR91PS, HP HP Pavilion dv 9500 Notebook PC, Toshiba SATELLITE PRO C850-19G, Intel W660DI, IBM IBM System x3350 -[4193E5G, SAMSUN 770Z5E/780Z5E, HP PN133AA-ABU, Gateway E-5200, and more.
A4tech Rfkbs-21 7324411/1/201412/27/2016a4tech_rfkbs-21-73244.exe140kbASUS 1001PQ, Fujitsu FMVWMS277, HP HP Compaq nw8000, Toshiba Dynabook TX/77MWHYD, Intel WIV68105-0268, Toshiba Dynabook TX/77MWHYD, MSI GT60 2OJWS, Compaq EG217AA-ABG SR1699AN AN540, Acer Aspire 1520, Toshiba SATELLITE C870-14G, LG E500-S.AP22R1, ICP / IEi KINO-690AM2, Supermicro X7DBP, and more.
A4tech Rfkbs-21 47310/6/201412/29/2016a4tech_rfkbs-21-473.exe197kbNEC NEC POWERMATE X8520, Sony VGN-NW250D, HP Db234a-abg 504a, Sony SVE1411E1RB, BYTSPD ByteSpeed LLC, Sony VGN-NS92XS, Sony VGN-UX90PS, and more.
A4tech Rfkbs-21 482.111/28/201412/29/2016-482.1.exe138kbIBM NetVista personal computer, MSI MS-9899, Toshiba SATELLITE C850-A821, WIPRO WIV37455-1080, ASUS P5GD2-TVM, HP Hp elite hpe410f, HP HP PAVILION DV9000 KP950EA#ABF, Acer TM7520, and more.
A4tech Rfkbs-21 704329/1/201412/27/2016a4tech_rfkbs-21-70432.exe87kbFujitsu CLW8GAG1D, Lenovo ThinkPad L412, HP KZ692AA-ABU m9373.UK, Sony VGN-NS240D, Toshiba NB100/HF, Compaq Presario 7132EA 470019-261, and more.
A4tech Rfkbs-21 701.13611/27/201412/30/2016a4tech_rfkbs-21-701.136.exe132kbSony VGN-TZ35AN, Dell OptiPlex G1 350Mbr+, Lenovo ThinkPad L530, Sony PCG-GR214EP, Fujitsu FMVCE80T7, Gateway DX441B, IBM 26523CU, Sony VGN-FW56E, Dell WN09, Sony VGN-TZ3RMN_N, and more.
A4tech Rfkbs-21 2266810/14/201412/28/2016a4tech_rfkbs-21-22668.exe158kbAcer Veriton Z430G, Open Labs Neko/Miko, HP HP Compaq 6715s, HP RZ412AA-ABZ, Panasonic CF-19TH187QW, Compaq RR472AA-ABF SR2102FR, Aquarius Aquarius Std, Pro, Elt, HP HP Compaq nx6110, and more.
A4tech Rfkbs-21 336749/10/201412/28/2016a4tech_rfkbs-21-33674.exe62kbPanasonic CF-53JAWZYDE, Acer Veriton S670, HP HP Compaq 8710p, HP HP Pavilion dv5000 ES248EA#ABD, Packard Bell IMEDIA MC 8236, NEC PC-VN750RG6B, HCL Infosystems IGL 1701CT, Itautec Infoway w7730, Lanix LANIX CORP 4080, Seneca Pro354493, and more.

Please Note: There are particular operating systems known to have problems with A4tech Rfkbs-21:
  • Windows Vista Home Premium
  • Windows 7 Home Basic
  • Windows 7 Starter
  • Windows XP Media Center Edition 2004
  • Windows Vista Starter
  • Windows XP Media Center Edition
  • Windows Vista Ultimate
  • Windows 7 Home Premium
  • Windows Vista Home Basic
  • Windows XP Media Center Edition 2005
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific A4tech Rfkbs-21 model.
Laptop A4tech Rfkbs-21Tablet A4tech Rfkbs-21Download A4tech Rfkbs-21Upgrade A4tech Rfkbs-21Update A4tech Rfkbs-212017 A4tech Rfkbs-21Free A4tech Rfkbs-21Data A4tech Rfkbs-21Info A4tech Rfkbs-21Help A4tech Rfkbs-21Guide A4tech Rfkbs-21Comments A4tech Rfkbs-21Windows 10 A4tech Rfkbs-21Vista A4tech Rfkbs-21Windows 7 A4tech Rfkbs-21Install A4tech Rfkbs-21