StarTech RS232 Null Modem Adapter Male Female, NM25MF

Here is a StarTech RS232 Null Modem adapter, 25 pin, male on one end, female on other end. Made in China, Model NM25MF. I think this is a cross over type adapter and not a straight pin to pin adapter. This is new old stock in vendor packaging. Slight shelf wear on packaging. No data sheets included.