TRS-80 Model 100 Portable Computer Service Manual PDF Copy 4G USB Stick You may be receiving a USB stick of a different color than that shown in the pictures. The USB stick that this comes on is new. Instructions manual copy on USB stick - 144 pages. This manual is in PDF format and can be printed to your printer if a hard copy is desired. Due to the non-returnable nature of digital products all sales are final. Seller chooses shipper (UPS or USPS)!