FOR SALE IS ONE (1) BRAND NEW PS/2 USB KEYBOARD and MOUSE TO USB CONVERTER ADAPTER CABLE BY IOGEAR BRAND MPN GUC100KM UPC#67279250012. PLEASE NOTE TATTERED BOX IN PICTURES, CONTENTS ARE BRAND NEW AND NEVER USED. THIS ADAPTER IS HIGH DEMAND AND ALMOST IMPOSSIBLE TO FIND IN THE USA. THIS IS THE CLASSIC OLD SCHOOL ADAPTER (now discontinued by iogear) THAT may ALLOW YOU TO USE YOUR OLD IBM CLICKY KEYBOARD WITHOUT EXTERNAL POWER, GAINING POWER FROM THE USB BUS. ALL REPORTS ARE THIS ADAPTER IS JUST AS EFFECTIVE AS THE OLD BLUE CUBE SOLUTION. THIS USB to PS2 ADAPTER CONVERTER CABLE IS A GREAT SOLUTION FOR THOSE WHO WANT TO USE LEGACY KEYBOARDS OR OLDER PS2 DEVICES ON A NEWer COMPUTER WITH USB (but no ps2 input). ALLOWS YOU TO CONNECT A PS2 MOUSE OR KEYBOARD OR BOTH THROUGH THE USB PORT ON MOST ANY COMPUTER WITH USB. COMPATIBLE WITH ALL VERSIONS OF WINDOWS. NO DRIVER REQUIRED, JUST PLUG AND PLAY, SUPPORTS INTELLIMOUSE AND PS/2 MOUSE STANDARDS, USB 1.1 & USB 2 COMPATIBLE. THIS UNIQUE CONVERTER ADAPTER ALLOWS YOU TO MAKE USE OF YOUR OLD PS2 KEYBOARDS AND MICE, SUPPORTS USB UHCly OHCI INTERFACE AND IS A VALID SUBSTITUTE FOR THE OLD BLUE CUBE ADAPTER. FOR VERY OLD KEYBOARDS REQUIRING EXTRA CURRENT (extra power) LIKE IBM CLICKY KEYBOARDS THIS PIECE WILL USUALLY WORK. VINTAGE KEYBOARDS OFTEN REQUIRE AN ACTIVE ADAPTER TO PROVIDE THE EXTRA CURRENT. YOU WILL RECEIVE ONE (1) NEW PS/2 KEYBOARD/MOUSE TO USB CONVERTER ADAPTER BY IOGEAR BRAND SHIPPED BY USPS FIRST CLASS MAIL.

Description from IOGEAR about this GUC100KM adapter,
Universal Serial Bus (USB) port technology has emerged in response to the proliferation of external peripheral devices (scanners, digital cameras, removable drives, etc.), that are increasingly being connected to the latest generation of PCs. USB behaves in a similar fashion to conventional bus ports (i.e., serial, parallel, PS/2), but since it does not require any IRQs, more devices can be attached to the system, and the problem of IRQ conflict is eliminated. The guc100km PS/2 to USB Keyboard and Mouse interface converter provides the means for PS/2 type keyboards and mice to connect to a PC, notebook, laptop, or handheld computing device that supports the USB specification via the USB bus instead of using conventional bus technology. An advantage of this for notebooks, for example, is that now an external mouse and keyboard can be connected at the same time without causing conflicts. The guc100km comes with two standard 6 pin mini DIN female connectors for the PS/2 keyboard and PS/2 mouse to plug into and has an attached 30 cm USB cable with a type A plug for connection to the PC's USB port, or to a USB hub. For further convenience - especially to users of notebooks, laptops, and handhelds - the guc100km adapter derives its operating power from the Universal Serial Bus itself, so no bulky external power supply needs to be taken along. And because it is a USB Specification compliant device, the guc100km supports energy-saving suspend and resume operations.

what is the difference between a passive converter and an active converter?
THIS passive converter operates on the limited power provided by the usb port.
AN active converter provides additional power through an external  ac power supply for keyboards or mice which may require more power,
more current, more juice, is sometimes required on older legacy devices,
like the older IBM clicky keyboards or legacy keyboards with lots of lights.
GO to my other items and search keyword IBM CLICKY KEYBOARD if you require the more advanced converter

 BID AND BUY HERE IN IN ABSOLUTE CONFIDENCE SINCE I HAVE THOUSANDS OF POSITIVE FEEDBACK AND TEN+ YEARS EXPERIENCE. I SHIP WITHIN TWO DAYS OF RECEIPT OF PAYMENT, OFTEN THE NEXT DAY. FREE USPS FIRST CLASS GREEN SHIPPING USING RECYCLED PACKAGING MATERIALS AND ENVIRONMENTALLY FRIENDLY MATERIALS TO ANYWHERE USA. I DO NOT SHIP ANYWHERE ELSE. HAVE A GREAT DAY AND THANK YOU FOR STOPPING BY.......