Features: brand new and high quality The notebook expands the RS232 interface, converts the serial interface through the USB interface, and connects to the printer efficiently and conveniently. Scope of application: suitable for connecting computers and various serial devices. Please look for the interface and plug before buying. This product is an RS232 nine-pin plug. Please look for the printer's RS232 nine-pin interface to avoid buying errors. Multi-system for Win8/10, for Mac OS free drive, for a variety of computer systems, plug and for play, support hot swap. Support RS232 serial interface, support remote wake-up, power management, and support handshake protocol for fully automatic serial communication. The signal transmission is stable, built with professional chips, the performance is more stable, and the compatibility is for stronger. The multi-layer shielding signal is not distorted, and the tinned copper wire core + aluminum foil + braided mesh multiple shielding can avoid printing abnormalities or garbled codes due to short circuits caused by long lines. Using PVC environmental for protection material, insulation and flame retardant, it is more assured to use. The interface is thickened with nickel-plated layer, which has the functions of corrosion resistance, acid and alkali resistance, high and low temperature resistance, and a longer service life. Specifications: Material: PVC Weight: 110g Size: As picture shows Cable Length: 1.2 meters Color: Black Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Serial Cable