YICHEN TECH reviews

Company Information

We are YICHEN TECH based in SHENZHEN , China. We are member of Tradekey.com since December, 2007. Our business is related to Computer Hardware & Software industry and we specifically deal in VGA card,lan card,router,switch,ADSL,wireless ADSL,wireless router,wireless lan card. Please find our product details below:

ADSL 2/2+
ADSL Compliant
• RADSL (ANSI T1.413 Issue 2)
• G.dmt (G.992.1)
• G.lite (G.992.2)
• G.hs (G.994.1)
• Auto-negotiating rate adaptation
• ADSL2 G.dmt.bis (G.992.3)
• ADSL2 G.lite.bis (G.992.4)
• ADSL2+ (G.992.5)
ATM Support
• 8 PVCs Support
• RFC 1483/2684 Multiple Protocol over AAL5
• VC and LLC Multiplexing
• Traffic Shaping UBR, CBR, VBR-nrt
• ATM Forum UNI 3.1/4.0 PVC
• I.610 OAM F4/F5 loop-back, AIS, and RDI OAM cells

wireless LAN card
Features
l USB interface, hot PnP supported
l TCP/ IEEE 802.11g, IEEE 802.11b supported, compliant with Wi-Fi
l IP, NDIS3, NDIS4, NetBEUI supported
l Two working modes available: Ad Hoc Mode and Infrastructure Mode
l Transmission rate up to 54Mbps covers 300m
l Network status auto detects and rate auto negotiable
l WPA, IEEE802.11x, TKIP, AES supported
l Simple configuration, monitor program available
l Supports the communication of desktop PC and notebook with WLAN
l Wireless roaming supported
Specifications
Standard and protocols supported IEEE 802.11g, IEEE 802.11b, CSMA/CA
Bus Type USB2.0
Frequency Range 2.4～2.4835GHz
Transmission Rate 54 Mbps, 48 Mbps, 36 Mbps, 24 Mbps, 18 Mbps, 12 Mbps, 9 Mbps, 6 Mbps, 11 Mbps, 5.5 Mbps, 2 Mbps, 1 Mbps
Channels 13
Sequence Spread DSSS(Direct Sequence Spread Spectrum)
Data modulation BPSK, QPSK, CCK and OFDM(BPSK/QPSK/16-QAM/64-QAM)
Transmission type CCK, OFDM
Transmission Distance Up to 100m (indoor), up to 300(outdoor)
Antenna Gain 2dBi
LED Indicator LINK/ACT(wireless network)
Working Environment Working temperature:0ºC～40ºC;Store temperature:-20ºC～80ºCWorking humidity :10%～95% RH Non-condensing
OS supported Windows9x/Me/2000/NT/XP/2003

5 ports network switch
Features

Complies with IEEE802.3, IEEE802.3x, IEEE802.3u
5 10/100M self-negotiable RJ-45ports
Supports MAC address auto-learning and auto-aging
Plug and play, LEDs indicate working status of network
delivers high speed switching capabilities and more stable
Internal universal power supply

Specifications
SStandard： IEEE 802.3, 802.3u, CSMA/CD, TCP/IP
Transmission Rate： 10/100Mbps for Half-Duplex mode
  20/200Mbps for Full-Duplex mode
Flow Control: IEEE 802.3x Flow Control (Full-Duplex)
Ports: 5 10/100Mbps Auto-Negotiation RJ45 ports (Auto MDI/MDIX)
Network Media: 10BASE-T: UTP category 3, 4, 5 cable (maximum 100m)
   100BASE-TX: UTP category 5, 5e cable (maximum 100m)
Back board width: 3.2Gbps
LED Indicator: Power, Link/Act, 100Mbps,
Environment: Operating Temperature: 0℃~55℃ (32℉~104℉)  Storage Temperature: -20℃~70℃ (-40℉~158℉)  Operating Humidity: 10%~90% non-condensing   Storage Humidity: 5%~90% non-condensing
Dimensions： 93mm × 83mm × 25 mm
Power： DC 9V500MA
Safety & Emission: FCC, CE

54M wireless PCI card
SStandard： IEEE 802.11g, IEEE 802.11b,
Interface: 32-bit PCI
Frequency Range： 2.4GHz-2.4835GHz
Radio Data Rate:： 11g: 54/48/36/24/18/12/9/6M (Auto-Sensing)
11b: 11/5.5/3/2/1M (Auto-Sensing)
Channel: 1~11 (US, Canada) ; 1~13 (Europe) ; 1~14 (Japan)
Spread Spectrum： DSSS
Modulation: BPSK, QPSK, CCK and OFDM (BPSK/QPSK/16-QAM/ 64-QAM)
Transmission Distance： Indoor up to 100m , outdoor up to 300m (it is limited in an environment)
 Receive Sensitivity@PE: 11g : -65dBm@10% PER11b : -78dBm@8% PER

Transmit Power： 15dBm
Antenna plus ： 2dBi
LED Indicator : Status
Data Security： WPA; 64/128-bit WEP; TKIP/AES
Environment： Operating Temperature: 0℃~40℃ (32℉~104℉)
Operating Humidity: 10%~90% non-condensing
Dimensions： 133mm × 121mm × 22 mm
Safety & Emission: Rohs, FCC, CE
Operation System： WIN98/ME/2000/XP/VISTA

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