i'm an computer technician, my boss asked me to test something that i dont know what it is. that is a box like a hard disk remover. but just a differrent that put in the CD-ROM. the CD-ROM cable and power cable are supply in that box. then behind the box have one power port, one DB-25 male and one DB-25 female ports. there is a words under that ports. "To Printer" under the DB-25 female port and "To Computer" under the DB-25 male port. now my problem is what is this hardware for ? how it's function and how it's connected ? PLEASE HELP...FAST..ANY HELP WILL BE APPROACIATE !