Source : support.dell
Download DELL Vostro (2521) Notebook Driver Windows 7 64bit

	Vendor	File	Version	Size
Download (198)	Application	Dell Dell Digital Delivery	2.1	1/21/2013
	Application	Dell Dell QuickSet	10.15.012, A04	1/21/2013
Download (186)	Audio	Dell Realtek ALC3221-CG	6.0.1.6741, A02	1/21/2013
Download (200)	Chipset	Dell Intel USB 3.0 eXtensible Host Controller Driver	1.0.5.235, A01	1/21/2013
Download (178)	Chipset	Dell Intel Management Engine Interface	8.1.0.1248, A00	1/21/2013
Download (163)	Chipset	Dell Intel Panther Point HM77 Chipset	9.3.0.1021, A00	1/21/2013
Download (155)	Chipset	Dell Realtek RTS5179 Card Reader	6.1.8400.39030, A00	1/21/2013
Download (160)	CPU	N/A Intel Turbo Boost Technology Monitor	2.6.2.0, A00	1/21/2013
Download (174)	Input	N/A Synaptics Touchpad	16.2.12.17, A01	1/21/2013
Download (432)	Network	N/A Dell Wireless 1x1 WLAN 802.11b/g/n (2.4GHz), Bluetooth v4.0+HS	WLAN: 9.2.0.504 /BT: 7.4.0.165, A01	1/21/2013
	Network	N/A Dell Wireless 1x1 WLAN 802.11b/g/n (2.4GHz), Bluetooth v4.0+HS	WLAN: 6.20.55.58_BT: 6.5.1.2500, A02	1/21/2013
Download (306)	Network	N/A Dell Wireless 1x1 WLAN 802.11b/g/n (2.4GHz), Bluetooth v4.0+HS	WLAN: 9.2.0.504 /BT: 7.4.0.145, A00	1/21/2013
Download (208)	Network	Dell Realtek RTL8105E-V	7.061.0612.2012, A00	1/21/2013
Download (169)	Serial ATA	INTEL Intel Rapid Storage Technology	11.1.0.1106, A00	1/21/2013
Download (184)	Video	Dell AMD Radeon HD 7670M	8.982.6.0, A01	1/21/2013
Download (216)	Video	Dell Intel HD Graphics 4000	9.17.10.2867, A02	1/21/2013

DELL Vostro (2521) Driver Windows 7 64bit