Brand Suckoo Serial DB9 Pin RS232 Switcher Sharer Splitter 4 in 1 out 2 in 1 out 1 in 4 out Bidirectional switching (1 host at a time) 4 computer hosts laptop sharing monitor or hard disk Black. This DB9 Pin RS232 Serial Switcher Sharer 4 in 1 out is a very practical device, it has 4 in 1 out interface, you can access the RS232 signal source in the 4 port RS232 input switcher, Such as 4 computer hosts, laptops external 1 monitoring or DVR and other equipment. Crossover cable serial connection. In addition, it has 1 in and 4 out ports for external connection of 4 sets of surveillance or DVR devices. 1 computer host laptop input, external 4 sets of monitoring or DVR equipment (switch monitoring or DVR one of the use). Direct serial line connection, switching mode: manual button switching. In addition, the RS232 switcher is capable of 2 in 1 out or 1 in 4 out bi-directional inter-conversion, providing stable quality and signal transmission for the connected devices. Compatible RS232 devices: such as computer mainframes, laptops and monitoring, DVR, instruments, meters, controllers and so on. Product color: black, product size: 12x4x9.5cm. Overall, this RS232 Serial Switch 4 In 1 Out is powerful and high performance for home entertainment systems, conference rooms, showrooms, industrial controls, etc. It can conveniently connect up to 4 computer hosts and laptops (1 host at a time). Brand Suckoo Serial DB9 Pin RS232 Switcher Sharer Splitter 4 in 1 out 2 in 1 out 1 in 4 out Bidirectional switching (1 host at a time) 4 computer hosts laptop sharing monitor or hard disk Black. This DB9 Pin RS232 Serial Switcher Sharer 4 in 1 out is a very practical device, it has 4 in 1 out interface, you can access the RS232 signal source in the 4 port RS232 input switcher, Such as 4 computer hosts, laptops external 1 monitoring or DVR and other equipment. Crossover cable serial connection. In addition, it has 1 in and 4 out ports for external connection of 4 sets of surveillance or DVR devices. 1 computer host laptop input, external 4 sets of monitoring or DVR equipment (switch monitoring or DVR one of the use). Direct serial line connection, switching mode: manual button switching. In addition, the RS232 switcher is capable of 2 in 1 out or 1 in 4 out bi-directional inter-conversion, providing stable quality and signal transmission for the connected devices. Compatible RS232 devices: such as computer mainframes, laptops and monitoring, DVR, instruments, meters, controllers and so on. Product color: black, product size: 12x4x9.5cm. Overall, this RS232 Serial Switch 4 In 1 Out is powerful and high performance for home entertainment systems, conference rooms, showrooms, industrial controls, etc. It can conveniently connect up to 4 computer hosts and laptops (1 host at a time).