Product model: R45B Product Name: M.2 B&M-key to B-key 3G/4G/5G Network Card Module Adapter Card Product application: Supports motherboard M.2 slot with 2280 M-key interface and network modules with 3042 and 3052 size B-key interface. This adapter is designed for PCIe network card modules. If using a USB network card module, connect via the included USB cable to the motherboard. Compatible with nanoSIM card recognition when used with a supported network module (network module not included). NOTE: Network module, SIM card, and antenna are not included Operating temperature: -40°C to 80°C Operating voltage: 3.3V only (Verify compatibility with your 5G module) Flame retardant grade: 94V0 Purchase restrictions: This product is designed for professional use and may require technical expertise for installation and configuration. Intended for purchase by qualified professionals only. Confirm specifications before ordering. Color: Black Material: PCB Package Contents: 1 x M.2 B&M-key 2280 to B-key Adapter Note: Other items not included. Color may vary slightly due to lighting and display settings. Measurement error allowed within +/- 1-3 cm.