Amazon.com: JMT EXP GDC Notebook External PCI-E Discrete Graphics Beast Series External Laptop Docking Station Mini PCI-E/M.2 A Key No Power (Expresscard) : Electronics
Refurbished: Lenovo Laptop Intel Core i5 2nd Gen 2520M (2.50GHz) 4GB Memory 320GB HDD 14.0" Windows 7 Professional T420 - Newegg.com
Rate this budget setup. Thinkpad T420 I7 1050Ti. - 9GAG
2011 14″ Lenovo Thinkpad T420 (NVS4200M) [2nd,2C,M] + RX 460 @ 4Gbps-EC2 (EXP GDC 8.x) + Win10 // DIY HDMI input port: internal & external all in one LCD with button switch
External Graphics Card for Laptop - eGPU Setup Complete Guide