1 x Audio: line-in / microphone 4 x USB 3.0 total 10 x USB 2.0 total 4x 2.0 or 2x 2.0/ 2x 3.0 (optional) x USB front 4x 2.0 2x 3.0 x USB rear 1 x VGA 1 x Seria 1 x DVI 1 x eSATA 1 x DisplayPort