Monitor Arm Supports 12~22 inches LCD monitors Rotating portrait and landscape of LSD monitor for better views Upgrade LSD monitors with improved ergonomic adjustment Simple installation - Mounting LCD monitor via desk Clamp Extends/retracts LCD monitor path; push your display out of the way when not inuse Cable management feature routes cables under the arm, out of the way Mounting Standards: VESA FDMI MIS-D, 100&75, C (hole pattern: 100 * 100mm & 75 * 75mm) Colour: black or silver   For 1 Monitor Model Picture Description EA-111-5S Desk clamp arm, 3-5kg, SILVER EA-111-5B Desk clamp arm, 3-5kg, BLACK EA-111-9S Desk clamp arm, 5-9kg, SILVER EA-111-9B Desk clamp arm, 5-9kg, BLACK Manual   For 2 Monitors Model Picture Description EA-111-P2-S Desk clamparm, panel *2, SILVER EA-111-P2-B Desk clamparm, panel *2, BLACK EA-111-PNB-5S Desk clamp arm, 3-5kg, panel+ nb, SILVER EA-111-PNB-5B Desk clamp arm, 3-5kg, panel + nb, BLACK EA-111-PNB-9S Desk clamp arm, 5-9kg, panel +nb, SILVER EA-111-PNB-9SB Desk clamp arm, 5-9kg, panel + nb, BLACK Manual   For 3 Monitors Model Picture Description EA-111-P3-S Desk clamp arm, panel * 3, SILVER EA-111-P3-B Desk clamp arm, panel *3 , BLACK Manual   NB TRAY Model Picture Description NB TRAY NB Tray desk mounting arm