A-Tech 8GB Module for HP ProBook 640 G4 Laptop & Notebook Compatible DDR4 2666Mhz Memory Ram (ATMS322455A25978X1) at Amazon.com
Amazon.com: Touchpad Protector for HP ProBook 640 G4 (Touchpad Protector by BoxWave) - ClearTouch for Touchpad (2-Pack), Pad Protector Shield Cover Film Skin for HP ProBook 640 G4 : Electronics
Amazon.com: HP ProBook 640 G2 14 Inch Business Laptop, Intel Core i7-6600U up to 3.4GHz, 16G DDR4, 512G SSD, Webcam, USB 3.0, Type-C, WiFi, VGA, DP, Win 10 Pro 64 Bit (Renewed) : Electronics
Amazon.com: Keyboard Cover for HP ProBook 440 G5 G6 G7 14", HP ProBook 430 G5, HP ProBook x360 440 G1 14", HP ProBook 445 G6 14", HP ProBook 640 G4 G5 14"
Amazon.com: BRIGHTFOCAL New Screen Replacement for HP ProBook 640 G4 4RA04UT 14.0 Non-Touch HD WXGA LED Screen LCD Screen Display : Electronics
Amazon.com: HP ProBook 640 G4 14'' Laptop, Intel i5 8350U 1.7GHz, 16GB DDR4 RAM, 1TB NVMe M.2 SSD, 1080p Full HD, Webcam, Windows 10 Pro (Renewed), Silver : Electronics
Amazon.com: AKGIFT Laptop Replacement Case Compatible for HP ProBook 650 G4 L09575-001 6070B1231101 L09603-001 6070B1231501 L09576-001 6070B1231802 (Bottom Base Cover) : Electronics
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Amazon.com: HP Laptop ProBook 640 G2 laptops PC, Intel Core i5-6300U, 8GB DDR4 Memory, 256GB M.2 SSD, DP, VGA, USB 3.0, Win 10 Pro Professional 64 bit Multi-Language Support English/French/Spanish(Renewed) : Electronics
Amazon.com: HP ProBook 640 G4 Laptop - 14.0" FHD (1920 x 1080), 8th Gen Intel Core i5-8350U 1.7GHZ, 16GB DDR4 RAM, 256GB SSD, WI-Fi Windows 10 Pro (Renewed) : Electronics
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Amazon.com: Colorful HP ProBook Keyboard Cover for 14 inch HP ProBook 440 G5 G6 G7, HP ProBook x360 440 G1 14", HP ProBook 430 G5 14", HP ProBook 640 G4 G5 14"
Amazon.com: HP ProBook 640 G4 Laptop - 14.0" FHD (1920 x 1080), 8th Gen Intel Core i5-8350U 1.7GHZ, 16GB DDR4 RAM, 256GB SSD, WI-Fi Windows 10 Pro (Renewed) : Electronics