D-Link DES-1250G, Gigabit Switch manual Technical Specifications, General

General

Standards

IEEE 802.3 10BASE-T Ethernet

IEEE 802.3u 100BASE-TX Fast Ethernet

IEEE 802.3z 1000BASE-SX/LX Gigabit Ethernet

IEEE 802.3ab 1000BASE-T Gigabit Ethernet

IEEE 802.3x Full Duplex Flow Control

Protocol

CSMA/CD

Data Transfer Rate

Ethernet: 10Mbps (half-duplex), 20Mbps (full-duplex)

Fast Ethernet: 100Mbps (half duplex), 200Mbps (full-duplex)

Gigabit Ethernet: 2000Mbps (full-duplex)

Topology

Star

Network Cables

10BASET: 2-pair UTP Cat. 3, 4, 5; up to 100m

100BASE-TX: 2-pair UTP Cat. 5; up to 100m

1000BASE-T: 4-pair UTP Cat. 5; up to 100m

Fiber module: mini-GBIC Fiber module(1000BBASE-SX/LX)

Number of Ports

48 × 10/100Mbps Auto-MDIX RJ45 ports

2 × 10/100/1000Mbps Auto-MDIX RJ45 ports

2 × mini-GBIC fiber slot (disables the Gigabit Copper ports when active)

Physical and Environmental

AC inputs

100-240V AC, 50-60 Hz internal universal power supply

Power Consumption

24Watts (Max)

Temperature

Operating: 0

°

~ 40

°

C (32

°

~ 104

°

°

°

C (14

°

- 158

°

F)

F), Storage: -10

~ 70

Humidity

Operating: 10% ~ 90%, Storage: 5% ~ 90%

Dimensions

440 x 44 x 310 mm (W x H x D) (17.3 x

1.7 x 12.2 in.)

EMI:

FCC Class A, CE Mark Class A, VCCI Class A

Safety:

CUL(UL60950)

Performance

Transmits Method:

Store-and-forward

Filtering Address Table:

8K entries per device

Packet Filtering/Forwarding Rate:

10Mbps Ethernet: 14,880/pps

100Mbps Fast Ethernet: 148,800/pps

1000Mbps Gigabit Ethernet: 1,488,000/pps

MAC Address Learning:

Automatic update

Transmits Method:

Store-and-forward

RAM Buffer:

1536K Bytes per device