Source : support.dell
Download DELL Inspiron 11 Legacy Inspiron Models (3138) Notebook Driver Windows 8.1 64bit

Category	Vendor	Description	Version	Date
Audio	Audio	Realtek High Definition Audio Driver	6.0.1.7195	06/27/2014	Download
BIOS	BIOS	Dell Inspiron 3138 System BIOS	A11	10/06/2015	Download
Chipset	Driver	Intel Chipset Driver	9.4.4.1006	02/19/2014	Download
Chipset	Driver	Intel® Dynamic Platform and Thermal Framework (DPTF) Driver	7.10.0.2208	02/19/2014	Download
Chipset	Driver	Intel® Sideband Fabric Device (Intel® MBI) Driver	1.70.305.16316	02/19/2014	Download
Chipset	Driver	Intel Trusted Execution Engine Driver	1.0.0.1050	01/08/2014	Download
Chipset	Driver	Realtek CardReader Driver	1.1.9200.8903	10/15/2013	Download
Application	Driver	Dell Update Application	4.1.0	01/29/2021	Download
Application	Driver	Dell Help And Support Application	2.6.1.0	03/27/2018	Download
Application	Driver	Dell Digital Delivery Application	3.4.1002.0	10/18/2017	Download
Application	Driver	Dell Customer Connect	1.5.1.0	10/13/2017	Download
Application	Driver	Dell Quickset Application	11.2.4	10/15/2013	Download
Network	Utility	Dell Wireless 1704 Wi-Fi and Bluetooth Driver	6.30.223.245	12/25/2014	Download
Network	Utility	Dell Wireless 1705 802.11b/g/n (2.4GHZ) + Bluetooth Driver	Wifi: 10.0.0.270 , BT: 8.0.1.308	02/19/2014	Download
Network	Utility	Realtek PCIe GBE Family Controller Driver	2.1.2013.528	10/09/2013	Download
Network	Utility	Dell Airplane Mode Switch Driver	1.4.1.0	09/10/2013	Download
Mouse, Keyboard & Input Devices	Driver	Dell Touchpad Driver	19.2.17.70	11/20/2018	Download
Video	Driver	Intel HD Graphics Driver	10.18.10.3408	08/29/2018	Download

DELL Inspiron 11 Legacy Inspiron Models (3138) Driver Windows 8.1 64bit