This document provides product specifications for a 1x64 rack-mounted optical switch (model SUN-1×64-SM-1310/1550-AC-FP-2U) manufactured by Guilin GLsun Science and Tech Group Co., LTD. The switch has low insertion loss and fast switching time, supports RS232 and Ethernet control, and is used in applications like FITL, automatic measurement, optical network monitoring, and cable maintenance. Key specifications include an insertion loss of 1.0dB maximum, support for multimode fiber with a 62.5/125μm core/cladding, over 10 million switching cycles, and operation from -5°C to 55°C.