DELL XPS 15 (L521x) Driver Windows 8.1 64bit

Source : support.dell

Download DELL XPS 15 (L521x) Notebook Driver Windows 8.1 64bit

Application (1)
Dell Update Application 1/14/2015 1.4.2000.0, A07 Download

Audio (1)
Realtek High-Definition Audio Driver 12/17/2013 6.0.1.7095, A01 Download

BIOS (1)
Dell XPS L521X System BIOS 1/20/2014 A16 Download

Chipset (4)
Intel Chipset Driver 10/15/2013 9.4.0.1026,  Download
Intel Management Engine Interface Driver 10/15/2013 9.5.13.1706, A00 Download
Intel Rapid Storage Technology Driver 10/15/2013 12.8.0.1016, A00 Download 
Realtek Card Reader Driver 10/15/2013 6.2.9200.39052, A00 Download

Mouse, Keyboard & Input Devices (1)
Dell Touchpad Driver 10/15/2013 17.0.8.0, A00 Download

Network (4)
Intel Centrino Advanced-N 6235 WiFi Driver 1/13/2014 16.8.0, A00 Download
Dell Wireless 1901 802.11b/g/n WiFi + Bluetooth Driver 10/15/2013 10.0.0, A00 Download
Intel Smart Connect Technology Driver 10/15/2013 4.2.40.2418, A00 Download
Qualcomm Killer Wireless-N 1202 Driver 10/15/2013 1.0.30.1052, A00 Download

Serial ATA (1)
SK Hynix Solid State Drive Firmware Update (Firmware) 8/1/2014 1010BL00, A02 Download

System Utilities (2)
Intel Rapid Start Technology Utility 10/31/2013 3.0.0.1053, A00 Download
ST Microelectronics Motion Sensor Driver 10/15/2013 4.11.0046, A00 Download

Video (2)
nVIDIA GeForce GT 630M/640M Graphics Driver 12/17/2013 9.18.13.3165, A02 Download
Intel HD Graphics Driver 10/15/2013 10.18.10.3262, A00 Download

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 DELL XPS 15 (L521x) Driver Windows 7 32/64bit
 DELL XPS 15 (L521x) Driver Windows 8 64bit