1..9pin USB Header Male 1 to 4 Female Extension Cable Card Motherboard 2..Port multiplier version: extend 9 pin USB 2.0 port to 4x 9 pin USB 2.0 ports 3..Magnet foot pad design, which install flexibly and repeatedly the bottom of case 4..5V LED indicator to show operation status 5..9-Pin USB 2.0 header to 4-Port USB 2.0 9-Pin header Hub with Additional Power and Magnetic base