This value, Led16 is MSB 2 bits, Led1 is LSB 2 bits. Each two bits represents one led:00 - Gray,01 - Green, 10 - Orange, 11 - Red. Led 1: Status of WSC/UC Ethernet (upper connector, left side). Led 2: Status of WSC/UC Ethernet (upper connector, right side). Led 3: Status of WSC/UC Ethernet (lower connector, left side). Led 4: Status of WSC/UC Ethernet (lower connector, right side). Led 5: Reserved - Status of managment link (upper connector). Led 6: Reserved - Status of managment activity (upper connector). Led 7: Reserved - Status of managment link (lower connector). Led 8: Reserved - Status of managment activity (lower connector). Led 9: Status of WSC E1/T1 (upper connector, left side). Led 10: Status of WSC E1/T1 (upper connector, right side). Led 11: Status of WSC E1/T1 (lower connector, left side). Led 12: Status of WSC E1/T1 (lower connector, right side). Led 13: Status of EOW Cascading (upper connector, left side). Led 14: Status of EOW Cascading (upper connector, right side). Led 15: Reserved - Status of external fans (lower connector, left side). Led 16: Reserved - Status of external fans (lower connector, right side).