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Amazon.com: De Young SATA 2nd SSD HDD Hard Drive Caddy for HP ProBook 6440b 6445b 6450b 6455b 6550b 6555b with Bezel/Faceplate + Bracket : Electronics
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Refurbished: Refurbished HP Grade A Probook 6440B 14" Laptop, Intel Core I5-520M 2.4 GHz, 8GB Memory, 1T, DVD, WIFI, Windows 10 Home 64-bit (Multi-language), 1 Year Warranty - Newegg.com
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OFFTEK 4GB Replacement Memory RAM Upgrade for HP-Compaq ProBook 6440b (DDR3-8500) Laptop Memory at Amazon.com
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