ram adata 4gb ddr4 For LapTop

 * Compact, lightweight, capless design

     Metal casing with colourful accent by capacity

 * Compliant with USB 3.1 Gen 1 (USB 3.0) specifications2

     30MB/s read, 5MB/s write

 *Capacity : 16 GB

kingston datatraveler se9 16gb USB 2.0 DTSE9H/16GBZ

 * Convenient – small, capless and pocket-sized for easy transportability

     Durable – metal casing with sturdy ring

 * USB Specification: USB 2.0,Guaranteed – five-year warranty

 * Supports Windows 7, Vista, XP and Mac