Used - Like New: XM11 Adata 128GB Internal SSD XM11ZZF5 FOR Asus UX21 UX31 Taichi 21 31 Series SSD - Solid State Drives HDD / SSD Accessories - Newegg.com
Amazon.com: Micro SATA Cables M.2 NGFF SSD to 18 Pin Blade Adapter for Asus UX31 UX21 Zenbook : Electronics
Used - Like New: XM11 Adata 128GB Internal SSD XM11ZZF5 FOR Asus UX21 UX31 Taichi 21 31 Series SSD - Solid State Drives HDD / SSD Accessories - Newegg.com
Asus Zenbook UX21e Solid-State Drive Replacement - iFixit Repair Guide
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Compatible Withm.2 Ngff Ssd To 18 Pin Adapter Card For Asus Ux31 Ux21 Zenbook Ssd | Fruugo IL
New 128GB 256GB 512GB 1TB SSD For ASUS Zenbook UX21 UX31 UX21A UX31A UX21E UX31E Taichi 21 31 Laptop SSD Replace SD5SE2 SDSA5JK
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03B03-00040500 ASUS 256GB SATA 6Gbps 2.5-inch Internal Solid State Drive ( SSD) for UX21E