Sprint Sierra Wireless 250U USB Modem External Antenna Adapter Cable - OEM SMK TS-9 Fits Sierra Wireless Models: Sierra Wireless Sprint 250U USB Modem 18" RG174 Coax Cable w/Poly Seal Insulation / Thermoplastic Resin Connector End Housings - For 3G & 4G Sierra Wireless USB Modem Connector End - OEM SMK TS-9 (Gold-Plated Copper) Antenna Connector End - FME Male (Stainless Steel w/Copper Center Pin) Nationwide / Worldwide Service - Lifetime Warranty