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Lenovo Thinkpad T420-4236-NVU Laptop USB Port I/O Card 40GAB5809-G200 – notebookparts.com
100w Usb Type C Pd Fast Charging Cable Cord For Lenovo Thinkpad T61 T60 T420 T430 Usb-c To 7.9x5.5mm Dc Power Adapter Connector - Laptop Adapter - AliExpress
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IBM Lenovo T420, T420I Laptop USB Port I/O Card 40GAB580S-G200 - Walmart.com
Lenovo ThinkPad T420 14" USB Port Board LNVH-41-AB580S-F00G | eBay
Lenovo ThinkPad T420 – Garrett Fuller
Used Thinkpad T420 with a 500GB HD, 8GB RAM, Intel i5 processor, Win 10, WEBCAM - Walmart.com