New Sticker Light Indicator Wifi Bluetooth for Lenovo Thinkpad T420S LCD Bezel | eBay
Amazon.com: Lenovo ThinkPad T420 Business Laptop - Windows 10 Pro - Intel Core i5-2520, 256GB SSD, 8GB RAM, 14.0" HD (1366x768) Anti-Glare Display, ThinkLight Keyboard Light, DVD/CD-RW Drive, VGA : Electronics
Amazon.com: Lenovo ThinkPad T420 Business Laptop - Windows 10 Pro - Intel Core i5-2520, 256GB SSD, 8GB RAM, 14.0" HD (1366x768) Anti-Glare Display, ThinkLight Keyboard Light, DVD/CD-RW Drive, VGA : Electronics
Lenovo ThinkPad T420 14.0 Laptop, Intel Core I7-2620M up to 3.4Ghz, 8G DDR3, 240G SSD, DVDRW, DP, W10P64-Multi Languages Support (EN/ES/FR), 1 year warranty Used Grade A - Walmart.com
I updated my CPU, Wlan/Bluetooth and USB in my T430 : r/thinkpad