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Zyxel 千兆以太网 Web 托管 PoE 交换机GS1900-8HP 8 Port Smart Managed (Fanless) 70W PoE+
Zyxel 8-Port Gigabit Switch, 70W PoE+, Easy Smart Managed, Fanless, (GS1900-8HP)

4.4 颗星,最多 5 颗星 195 评论
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70W PoE+
8 Port Smart Managed (Fanless)
12期7.5%费率,每月仅 ¥102.95 最高12期,多种分期方式可选 了解更多
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  • Fast networking performance with 8 Gigabit Ethernet ports and non-blocking full bandwidth of 2,000 Mbps per port
  • Smart PoE+ 802.3af/802.3at design with a max of 30W per port (70W total budget) maximizes your power budget to support more APs, VoIP phones and IP cameras
  • Get up and running in minutes: The intuitive web-based set-up wizard enables simple and fast configuration and management, even for nontechnical staff
  • Compact desktop or wall-mount fanless design ensures quiet operation in small offices and higher reliability over time
  • Lifetime hardware warranty, free firmware upgrade support and free technical support for long-term assurance
    • Fast networking performance with 8 Gigabit Ethernet ports and non-blocking full bandwidth of 2,000 Mbps per port
    • Smart PoE+ 802.3af/802.3at design with a max of 30W per port (70W total budget) maximizes your power budget to support more APs, VoIP phones and IP cameras
    • Get up and running in minutes: The intuitive web-based set-up wizard enables simple and fast configuration and management, even for nontechnical staff
    • Compact desktop or wall-mount fanless design ensures quiet operation in small offices and higher reliability over time
    • Lifetime hardware warranty, free firmware upgrade support and free technical support for long-term assurance
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Perfect for SMBs that want to extend their physical network to remote areas or to high-power devices like Wi-Fi access points, IP cameras and VoIP phones, the Zyxel GS1900-8HP 8-port Gigabit Easy Smart Managed PoE+ Switch makes expansion easy by delivering power-saving features, a fanless design and more options for network control. Its intelligent PoE design maximizes the switch's power budget to support more devices. And with built-in support for VLANs, enhanced Quality of Service (QoS), IGMP Snooping, Link Aggregation (LAG), IPv6 and DoS prevention, this switch helps you easily isolate and prioritize wired and wireless traffic, while enabling guest network access and controlling bandwidth between ports. It's all done through a user-friendly set-up wizard that makes configuration and management a breeze. And thanks to a compact, fanless design, this switch can be deployed virtually anywhere, with full assurance of quiet operation and reliability for years to come. For the same price as other PoE switches, why not get more?

Perfect for SMBs that want to extend their physical network to remote areas or to high-power devices like Wi-Fi access points, IP cameras and VoIP phones, the Zyxel GS1900-8HP 8-port Gigabit Easy Smart Managed PoE+ Switch makes expansion easy by delivering power-saving features, a fanless design and more options for network control. Its intelligent PoE design maximizes the switch's power budget to support more devices. And with built-in support for VLANs, enhanced Quality of Service (QoS), IGMP Snooping, Link Aggregation (LAG), IPv6 and DoS prevention, this switch helps you easily isolate and prioritize wired and wireless traffic, while enabling guest network access and controlling bandwidth between ports. It's all done through a user-friendly set-up wizard that makes configuration and management a breeze. And thanks to a compact, fanless design, this switch can be deployed virtually anywhere, with full assurance of quiet operation and reliability for years to come. For the same price as other PoE switches, why not get more?

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美国亚马逊: 3.9 颗星,最多 5 颗星 123 条评论
Mike Abretske
5.0 颗星,最多 5 颗星 Loud Sucker
2015年3月7日 - 已在美国亚马逊上发表
已确认购买
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Mike Abretske
5.0 颗星,最多 5 颗星 Loud Sucker
评论于 2015年3月7日 在美国 🇺🇸 发布
Okay - this switch is awesome. It's fast and the web pages update fast when you apply or save. There have been several complaints about the default ip address - really? So what, just re-configure it and move on. There have also been complaints about having to "apply" and then "save". Big deal, just do it, its really quick and snappy, so I don't see what the problem is. For a typical IT environment, this switch is the bomb if it meets your power requirements.

The ONLY downfall I have found with this switch is that it has NO SOFTWARE CONTROLLED FAN CONTROL. The three fans are full bore all the time. If you're putting this in an IT closet, stop reading now because this switch is for you!! If this switch is going to be around people, it's gonna be a problem. There are two high CFM fans running at full bore cooling the power supply at all times. There is one mid-high CFM fan running at full bore cooling the electronics at all times. Unfortunately from what I can/cannot find in the config/monitoring screens, the firmware does NOT monitor temperature or regulate the fan speed (even though the fans are wired for tachometer monitoring to the pcb). This switch might be perfect if they did this.

Mine is going in my master bedroom closet - so it's a problem. But I like it so much, I'm creating a solution. I will NOT be using the full 170W (initially), so I'm replacing the fans with lower CFM fans that are nearly silent. This will undoubtedly void my warranty.

If you want to reduce the noise and want to keep the same CFM, please note (and this means you too ZyXEL) that the fan body support arms on the installed fans DO NOT MATCH the pattern stamped in the side of the unit for ventilation (see images). This adds additional turbidity, reduces real CFM throughput and most certainly adds noise. If you get fans with matching CFM ratings and a support arm pattern that matches whats stamped on the switch chassis (it's very standard - the fans I bought matched and that's how I became aware of the issue to begin with), the unit will actually be cooler and quieter.. Or, you can get slightly lower CFM fans and have the same airflow with even less noise.

Regardless, you wont find a 24 port fanless POE switch. AND you wont find a quiet one. You'll have to make it... Once my full compliment of fans comes in, I'm going to completely re-engineer the airflow, provide heat spreaders from the high wattage components on the power supply to the sheet metal body and re-post the results, with a quiet 24 port POE switch.

*** EDIT 1/20/2016 ***

Airflow was re-engineered so all fans act on all parts. Additionally, all fans were replaced with quieter, lower CFM fans. Copper shims and thermal paste were also added along with electrical insulators to sink/spread the heat generated from the main power supply heat sinks to the sheet metal chassis. The unit puts out 20dB less noise. That cuts the noise by 98%, or arguably by at least 75% as perceived by the human ear (every 3dB is a 50% reduction, but as perceived by the human ear it's arguably every 6-9dB depending on who you talk to due to the logarithmic nature of human hearing). Bottom line is that when you make something half as loud, and then do it again once or twice more, it's no where near as annoying as it was to begin with - very tolerable now, and with it located in the master bedroom closet, with the door open, we don't hear it from the bed at night. Success!!

Images don't show the copper shims, thermal paste and electrical insulators - those were applied to the main PS heat sinks after the images were taken and then the cover smooshed on for good contact for proper thermal coupling. This may not have been necessary, but it's certainly staying cool and has been trouble free since modification.
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88 个人发现此评论有用
Geezer Geek
1.0 颗星,最多 5 颗星 Please read and save some money
2021年2月11日 - 已在美国亚马逊上发表
已确认购买
2 个人发现此评论有用