Samsung DeskMaster 486Q (SD925E) Computer Service Manual PDF Copy 4G USB Stick The USB stick that this comes on is new. Service manual copy on USB stick - 164 pages. This manual is in PDF format and can be printed to your printer if a hard copy is desired. You may be receiving a USB stick of a different color than shown in pictures! Due to the non-returnable nature of digital products all sales are final. Seller chooses shipper (UPS or USPS)!