Friday, August 20, 2010

Today's Gizmo - 20/08/2010






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 D-Link DES-1008D 8-Port Ethernet Switch
D-Link DES-1008D 8-Port Ethernet Switch
Enables small workgroup to flexibly connect to Ethernet ad Fast Ethernet and integrate automatically.




Overview
The DES-1008D is an unmanaged 10/100Mbps switch designed to enhance small workgroup performance while providing high level of flexibility. Powerful yet easy to use, this device allows users to simply plug any port to either a 10Mbps or 100Mbps network to multiply bandwidths, boost response time and satisfy heavy load demands. 8 Auto-sensing 10/100Mbps Ports The switch comes with 8 10/100Mbps ports, allowing a small workgroup to flexibly connect to Ethernet ad Fast Ethernet and integrate. These intelligent ports detect the network speed and auto-negotiate between 100BASE-TX and 10BASE-T, as well as between full- and half-duplex.
Flow Control for Secure Transmission
All ports support 802.3x flow control. This function minimizes dropped packets by sending out collision signals when the ports receiving buffer is full. Flow control is available in the full-duplex mode.
Auto-negotiation of MDI/MDIX Cross Over
All ports support auto-negotiation of MDI/MDIX cross over. This eliminates the need for cross over cables or uplink ports. Any port can simply plug to a server, a hub or a switch, using the usual straight-through twisted-pair cable.
SOHO Plug-and-Play
With 8 plug-and-play ports, the switch is a perfect choice for the small workgroup to upgrade performance in a client/server environment. The ports can be connected to servers in full-duplex, or hubs in half-duplex.
Desktop Power 
With low-cost connection per-port, the switch can also be set up for direct connection from the PCs. This relieves data bottleneck by giving each workstation a dedicated bandwidth on the network.
Features
 > 8 10/100Mbps ports  > Per-port auto MDI/MDIX  > All ports support full/half-duplex,network speed auto negotiation  > Auto-learning of network configuration  > Secure store-and-forward switching scheme  > Auto-correction of reverse twisted-pair polarity
Specifications
Technical Specifications
Standards 
IEEE 802.3 10BASE-T Ethernet
IEEE 802.3u 100BASE-TX Fast Ethernet
ANSI/IEEE 802.3 NWay autonegotiation
IEEE 802.3x Flow Control
Protocol 
CSMA/CD
Data Transfer Rates 
:
Ethernet
 10Mbps (half-duplex)
 20Mbps (full-duplex)
 Fast Ethernet:
 100Mbps (half-duplex)
 200Mbps (full-duplex)
Topology
:  Star
Network Cables :
10BASE-T:
 UTP Cat. 3, 4, 5 (100 m)
 EIA/TIA-568 STP (100 m)
 100BASE-TX:
 UTP Cat. 5 (100 m)
 EIA/TIA-5681 STP (100 m)
Number of Ports 
10/100Mbps port x 8
Twisted-pair Rx Reverse Polarity
Auto-correction 
LED Report 
Per device: Power
 Per port:
10Mbps, 100Mbps,
 Full-duplex, Collision
Transmission Method
 Store-and-forward 
MAC Address Table  8K entries per device
MAC Address Learning  Automatic update
Buffer Memory 
256Kbytes per device
Packet Filtering Rates
  10BASE-T: 14,880 pps per port (half-duplex)
 100BASE-TX: 148,800 pps per port (half-duplex)
Packet Forwarding Rates 
10BASE-T: 14,880 pps per port (half-duplex)
 100BASE-TX: 148,800 pps per port (half-duplex)
Power Input 
DC 7.5V/1A
 Through external AC power adapter
Power Consumption 
2 watts (max.)
Operating Temperature 
0 - 50 C
Storage Temperature 
-10 - 70 C
Operating Humidity 
10% - 90%
Storage Humidity
  5% - 90%
Dimensions