3/28/2017 new driver models for direct download:1029
Tecom Er4021un 5 stars review"The best driver WIKI ever! I wil keep coming back for sure."Eric Smalter, Boston, MA
Supported languages for Tecom Er4021un
Certifications for Tecom Er4021un
5 stars for Tecom Er4021un "WOW! Finally my PC got up to speed!" Melany Kim 7/18/2015

Checking...for 3/28/2017 Updates

All drivers on are updated on daily basis.

However, a new version of Tecom Er4021un might have been uploaded since our last site update.

Tecom Er4021un Driver Download

Windows Compatibility for Tecom Er4021un driver

Tecom Er4021un Driver Details:

Tecom Er4021un File Name:

Tecom Er4021un Driver Version: 29.4tRS

Tecom Er4021un ZIP Size: 110.kb

Manufacturer: Tecom

Tecom Er4021un was fully scanned at: 3/27/2017
Scan Status: driver download scanOK

Tecom Er4021un special revision for: Windows 8 Enterprise 32 bit, Windows Vista Home Basic 64 bit, Windows 10 32 bit, Windows 8 64 bit, Windows XP Starter Edition 64 bit, Windows XP 64-bit Edition 64 bit, Windows 7 Enterprise (Microsoft Windows NT) 64 bit, Windows XP Media Center Edition 32 bit

Tecom Er4021un Download Stats:

Driver Uploaded: 2/4/2017

Direct Downloads: 2144
Most Recent Download: 3/26/2017
Managed Downloads: 3509
Most Recent Download: 3/26/2017
Download Mirrors: 2
Current Delay: 16 Seconds
Driver License: Free to the general public

Direct Download Success Stats:

Reports Issued By 2060/2144 Users

Success Reported By 246/2060 Users

Driver Download Score66/100

Driver Installation Score61/100

Overall preformance Score60/100

Tecom Er4021un 107 Thumbs Up107Thumbs
Tecom Er4021un 29 Thumbs Down29Thumbs
Tecom Er4021un 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 3083/3509 Users

Success Reported By 2610/3083 Users

Driver Download Score81/100

Driver Installation Score82/100

Overall preformance Score95/100

Tecom Er4021un 2540 Thumbs Up2540Thumbs
Tecom Er4021un 148 Thumbs Down148Thumbs
Tecom Er4021un 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 Tecom Er4021un 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 Tecom Er4021un + all other outdated drivers, and installs them all at once.

Please help us maintain a helpfull driver collection.
After downloading and installing Tecom Er4021un, 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.

Tecom Er4021un 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 Tecom Er4021un disfunctions.

Scan performed on 3/28/2017, Computer: IBM 8114E9G

Outdated or Corrupted drivers:8/23

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel(R) 4 Series Chipset PCI Express Root Port - 2E11Corrupted By Tecom Er4021un
Mice And Touchpads
ELAN PS/2 Compatible MouseOutdated
Elo TouchSystems USB Human Interface DeviceUp To Date and Functioning
A4Tech HID-compliant mouseOutdated
Usb Devices
Advanced Micro Devices USB (Universal Serial Bus)-ControllerUp To Date and Functioning
Hewlett-Packard Deskjet F4200 seriesUp To Date and Functioning
Microsoft Standard-USB-HubUp To Date and Functioning
Sound Cards And Media Devices
Realtek High Definition Audio-apparaatUp To Date and Functioning
Network Cards
Intel Ethernet ControllerCorrupted By Tecom Er4021un
Microsoft Keyboard Device FilterUp To Date and Functioning
Hard Disk Controller
Intel(R) 82801FB Ultra ATA Storage Controllers - 2651 - 2651&CC_0101Up To Date and Functioning
Microsoft Texas Instruments PCI-xx21/xx11 CardBus Controller with UltraMediaCorrupted By Tecom Er4021un
ATMEL maxTouch I2C Boot Bridge Peripheral DriverUp To Date and Functioning
Motorola Android Composite ADB InterfaceUp To Date and Functioning
ACEECA Palm HandheldUp To Date and Functioning
Nokia Nokia C6-00 USB LCIFUp To Date and Functioning
Validity Sensors Validity Sensors (WBF) (PID=0018)Up To Date and Functioning
Cameras, Webcams And Scanners
SunplusIT HD WebcamUp To Date and Functioning
Video Cards
ATI ATI Technologies, Inc. 3D RAGE PRO AGP 2XUp To Date and Functioning
Input Devices
Logitech HID-compliant consumer control deviceUp To Date and Functioning
Port Devices
PROLiNK PROLiNK Diagnostics Device (COM8)Outdated
Sony Digital Flat Panel (1024x768)Corrupted By Tecom Er4021un
Mobile Phones And Portable Devices
Acer NOKIAOutdated

Scan performed on 3/28/2017, Computer: HP KZ758AA-ABU

Outdated or Corrupted drivers:6/17

Device/DriverStatusStatus DescriptionUpdated By Scanner
Intel PCI Express standard Root PortCorrupted By Tecom Er4021un
Mice And Touchpads
A4Tech Compatible USB Port MouseCorrupted By Tecom Er4021un
Logitech Logicool HID-compliant Unifying MouseUp To Date and Functioning
Usb Devices
Sierra Wireless Sierra Wireless DeviceCorrupted By Tecom Er4021un
Sound Cards And Media Devices
Toshiba TOSHIBA USB ISDB-T and ISDB-S TV Tuner(x64)Up To Date and Functioning
Network Cards
Cologne Chip AG, Billion Electric Network ControllerOutdated
Microsoft Keyboard Device FilterUp To Date and Functioning
Hard Disk Controller
Intel(R) 6 Series/C200 Series Chipset Family 4 port Serial ATA Storage Controller - 1C00Up To Date and Functioning
Intel Intel(r) AIM External Flat Panel Driver 1Up To Date and Functioning
Creaform NEC OHCI Compliant IEEE 1394 Host ControllerUp To Date and Functioning
Nokia Nokia E52 USB OBEXCorrupted By Tecom Er4021un
Cameras, Webcams And Scanners
Sonix USB Video DeviceUp To Date and Functioning
Video Cards
ATI ATI Technologies, Inc. 3D RAGE PRO AGP 2XUp To Date and Functioning
Input Devices
Logitech USB Input DeviceUp To Date and Functioning
Port Devices
Sony Ericsson Sony Ericsson 750 USB WMC Device Management (COM7)Outdated
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
Tecom Er4021un M421.1048/22/201412/29/2016tecom_er4021un-m421.104.exe86kbGateway GM5688E, Fujitsu FMVXNN281, HP DV9304EU, IBM 265244G, Sony VGN-TT1, Sony VPCF13D4E, HP DM150A-ABM A320M, Toshiba Dynabook Satellite T30 173C/5W, HP NC699AA-ABJ a6740jp, HP GG692AA-ABZ, Toshiba SATELLITE PRO L770-149, Acer TravelMate 8481TG, HP PN239AA-ABZ, LG S1-M402E1, THEIS TH-P925/945G7MD-8KS2HV/1024/80/Profi-Towe, and more.
Tecom Er4021un I1.11.177010/19/201412/29/2016ayciyw-i1.11.1770.exe115kbFujitsu FMVFB70NT, ASUS R052CE, HP 3082, Lenovo ThinkPad X61, Panasonic CF-53AAC01FT, NEC PC-GL26ES9LE, HP KX621AA-ABT, HP FR564AA-ABF m9356.f, Packard Bell IMEDIA B6363, Acer Veriton M-480G, M&A E10IS, Gateway FX6800, HP WL325AA-ABD p6326de, Lenovo ThinkPad SL410, NEC PC-VL5707D1Y, Toshiba SATELLITE,A665, and more.
Tecom Er4021un X2076410/7/201412/28/2016tecom_er4021un-x20764.exe166kbHP HP Compaq 6910p, HP HP Compaq nc6110, Sony PCG-FX33S_BP, NEC Express5800/56Xe [N8000-672, Toshiba SATELLITE PRO L770-149, Biostar TP45 HP, Sony VGN-TZ92S, Toshiba Satellite L850-B750, Sony VGN-SZ76GN_B, MSI MS-16GN, Toshiba SATELLITE C55-A-128, MSI MS-A95311, Acer Aspire M7200, Panasonic CF-W8GWEYZNT, Compaq P2800N P170X520WC25EC, Lenovo 3000 N100 Notebook, and more.
Tecom Er4021un S31.138412/1/201412/30/2016tecom_er4021un-s31.1384.exe218kbToshiba SATALLITE A300, WIPRO WSG68125W7-0002, Sony VGN-CS31Z_Q, IBM IBM System x3400 M3 Server -[7379KFG, IBM ThinkPad R51, Intel S3420GPC, HP HP ProBook 4520s, ASUS P5QPL-VM, Panasonic CF-18KH2ZXBC, WIPRO WIV37555-1436, Panasonic CF-SX1WEUHR, NEC PC-GV296VZGL, IBM IBM eServer x3105 -[434722G, Acer Aspire M5800, Toshiba Dynabook T350/36ACS, HP EC581AA-B1U, and more.
Tecom Er4021un 61.19632/10/201512/30/2016tecom_er4021un-61.1963.exe198kbToshiba Dynabook T350/34BCS, Sony VPCEA36FG, Sony PCV-RS216, IBM 2668WGY, Compaq ProLiant ML350 G3, LG LB50-CC34ZL, Panasonic CF-53AAC28FG, Dell L550cx, Panasonic CF-W7BWAZFBE, Acer Aspire X5900, IBM BladeCenter HS22 -[7870B4U, and more.
Tecom Er4021un Y29281/2/201512/29/2016vjqylfqb-y2928.exe105kbSony VGN-FE17SP, Compaq FR664AA-ABF SR5617FR, Lenovo 7661ZRG, Acer Aspire 1825PT, THEIS TH-C346/945GZME-RH/512/80/Midi-Towe, Sony PCV-RZ211, Sony VGN-NS220TH, Panasonic CF-19KHRC62M, NEC PC-MY30VBZED, HP GX610AAR-ABA m9180f, Panasonic CF-T8EWETZAM, Sony SVS1311B4E, Panasonic CF-19KDRC66M, NEC PC-VY16AEDERFW1, Compaq GM442AA-ABA SR5125CL, Zoostorm 7010-0246A, WIPRO WIV37555-1436, IBM 818388J, and more.
Tecom Er4021un K222.1369/23/201412/30/2016tecom_er4021un-k222.136.exe92kbLG R580-UAAD6BT, LG R405-A.CPF1E1, Sony PCV-RZ104, KONTRON 886LCD-M/Flex, HP PS226AA-ABE, IBM 8141KGR, HP KC707AA-ABE, IBM ThinkPad X41, NEC PC-GV286VZAU, HP KN472AA-ACB, Toshiba Satellite 2455, Sony VPCF13QFX, and more.
Tecom Er4021un 300962/8/201512/29/2016tecom_er4021un-30096.exe33kbIBM 8183Y59, Sony VPCEB33FG, HP 310-1125uk, Gateway GT5652j, Intel WIV68805-0052, ASUS W3A, IBM System x3550 M3 -[7944PAA, NEC VERSAE3100 NN780248559, HP FK522AAR-ABA a6544f, IBM 8215WBM, IBM 818373G, and more.
Tecom Er4021un 320221/6/201512/29/2016tecom_er4021un-32022.exe126kbHP HP Pavilion 0 Notebook PC, HP HP Pavilion 11 x2 Notebook PC, Compaq EC516AA-ABH SR1519NL NL530, Lenovo ThinkPad Edge 11, HP XXX, Gateway MC7813G, Sony VGN-NW24MG, LG R560-CR20K, Fujitsu FMVNB14BR, Lenovo ThinkPad X61, NEC PC-LS150FS1TB, Toshiba Satellite C50-A491, IBM 8183DGU, Lenovo 3000 H230 10025, EMachines 98.Y2D7Z.CF0, Dell Inspiron N5040, Gateway DX4820-23, and more.
Tecom Er4021un M62391.11/1/201512/27/2016tecom_er4021un-m62391.1.exe63kbIBM Eserver xSeries 346 -[8840ECY, Gateway DX4300, HP HP Pavilion zv5000 PN467U#ABA, IBM IBM System x3350 -[4193E5G, Lenovo 3000 J200p Desktop, Acer Extensa 2900E, Compaq GS255AV-AB4 SR5211CF, Panasonic CF-30FTSAZN2, Sony VGN-FW550F, HP HP d330 uT, NEC VERSAP550 NN680209359, Supermicro C7Q67, and more.

Please Note: There are particular operating systems known to have problems with Tecom Er4021un:
  • Windows RT
  • Windows XP Media Center Edition 2005
  • Windows 8 Pro
  • Windows XP Home Edition N
  • Windows Vista Starter
  • Windows Vista Business
  • Windows 7 Service Pack 1 (Microsoft Windows NT)
  • Windows XP Starter Edition
If you encounter problems with the direct download for these operating systems, please consult the driver download manager for the specific Tecom Er4021un model.
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