Dell Inspiron 15 3521 Drivers for Windows 7
| Category | Description | Download |
| Realtek High-Definition Audio | Realtek Audio Driver ALC-3221 | |
| Intel USB 3.0 Driver | Intel® USB 3.0 eXtensible Host Controller | |
| Intel Chipset Driver | Intel(R) 7 Series Chipset | |
| Intel Management Engine Interface | Intel Management Engine Interface | |
| Realtek Card Reader Driver | Realtek Card Reader RTS5179 | |
| Intel Turbo Boost Technology | Intel Turbo Boost Technology Monitor | |
| Synaptics Touchpad Driver | Synaptics Touchpad | |
| Dell Wireless 1703/1705 WiFi + BT | Dell 1703/1705 WiFi + BT | |
| Dell Wi-Fi + BT Driver | Dell Wireless 1704 802.11b/g/n | |
| Realtek Ethernet Controller Driver | Realtek Network RTL8105E-V | |
| AMD Graphics Driver | AMD Radeon HD 7670M Graphics Driver | |
| AMD Graphics Driver | AMD Radeon HD 8730M Graphics Driver | |
| Intel Graphics Driver | Intel HD 4000 Graphics Driver |