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Description
Lenovo ThinkSystem SR550/SR590/SR650 x16/x8 PCIe FH Riser 1 KitThe Lenovo ThinkSystem SR550, SR590, and SR650 servers are engineered for performance, density, and reliability in data centers. The x16 x8 PCIe FH Riser 1 Kit is a purpose built expansion solution designed to maximize PCIe I O flexibility in these systems. With this riser kit, you can reconfigure PCIe lanes to suit your workload requirements, enabling faster accessory deployment, improved adapter compatibility, and streamlined cabling within a
The Lenovo ThinkSystem SR550, SR590, and SR650 servers are engineered for performance, density, and reliability in data centers. The x16/x8 PCIe FH Riser 1 Kit is a purpose-built expansion solution designed to maximize PCIe I/O flexibility in these systems. With this riser kit, you can reconfigure PCIe lanes to suit your workload requirements, enabling faster accessory deployment, improved adapter compatibility, and streamlined cabling within a compact server footprint. Built by Lenovo to meet enterprise-grade standards, this kit helps you unlock more bandwidth, optimize I/O placement, and preserve valuable rack space in dense environments.
- Optimized PCIe lane routing for flexible I/O configurations. The Riser 1 Kit enables efficient conversion between x16 and x8 PCIe lanes, giving you the ability to tailor expansion slot connectivity to your high-performance GPUs, network adapters, storage controllers, or accelerator cards without compromising signal integrity. This adaptability is especially valuable in mixed workloads where different PCIe devices demand varied lane allocations.
- Designed for Lenovo ThinkSystem SR550, SR590, and SR650 platforms. This riser is engineered to integrate seamlessly with the ThinkSystem family, ensuring reliable mechanical fit, electrical compatibility, and rigorous testing across Lenovo’s enterprise chassis. By choosing the official ThinkSystem riser, you benefit from consistent performance, factory-level validation, and a warranty aligned with your server hardware.
- Premium build quality and robust signaling integrity. The FH (Full Height) PCIe riser uses high-grade connectors, shielding, and precision manufacturing to minimize EMI and preserve PCIe signaling performance. Whether you’re deploying storage arrays, high-speed NICs, or accelerator cards, the kit maintains stable performance under sustained enterprise workloads and dense rack environments.
- User-friendly, installation-friendly design with included hardware. The kit ships with all required mounting hardware and a straightforward assembly process. Its compact form factor and clearly labeled connectors simplify field replacements or upgrades, reducing downtime during hardware refreshes. Lenovo’s engineering mindset translates into predictable, repeatable installation experiences for data center technicians.
- Enterprise-grade reliability for data centers and virtualization workloads. By delivering consistent PCIe connectivity and solid mechanical support, the riser kit helps sustain multi-VM or containerized workloads with dependable I/O throughput. The solution is built to endure the rigors of 24/7 operation, helping to minimize maintenance windows and maximize system uptime in mission-critical environments.
Technical Details of Lenovo ThinkSystem SR550/SR590/SR650 x16/x8 PCIe FH Riser 1 Kit
- Product type: PCIe FH Riser Kit designed for Lenovo ThinkSystem servers.
- Compatibility: Specifically engineered for Lenovo ThinkSystem SR550, SR590, and SR650 server models.
- Riser configuration: Supports x16/x8 PCIe lane routing, enabling flexible expansion slot allocation within supported chassis.
- Form factor: Full Height (FH) PCIe riser designed for enterprise server environments and dense rack deployments.
- Kit contents: Includes one PCIe FH Riser 1 Kit with mounting hardware and connectors required for installation in compatible ThinkSystem systems.
- Electrical characteristics: PCIe-compatible connectors and lane routing optimized for reliable enterprise performance across common NICs, storage controllers, and accelerator cards.
- Intended use: Ideal for data centers seeking scalable I/O expansion, improved device placement, and streamlined upgrade paths within SR550/SR590/SR650 configurations.
how to install Lenovo ThinkSystem SR550/SR590/SR650 x16/x8 PCIe FH Riser 1 Kit
- Prepare the server: Power down the system, unplug power cords, and discharge any static electricity. Remove the server cover and gain access to the PCIe riser area according to Lenovo service documentation for the SR550, SR590, or SR650 model you are servicing.
- Identify the correct riser slot: Locate the PCIe riser bay designated for the x16/x8 configuration in your ThinkSystem chassis. Verify that the slot matches the FH riser connector and that no other adapters obstruct the installation path.
- Install the riser: Align the riser connectors with the motherboard edge and seat it firmly into the PCIe slot. Use the included mounting hardware to secure the riser to the chassis or riser cage as specified by Lenovo’s installation guidelines.
- Route and secure cables: If your configuration includes PCIe devices that require external cabling (for example, certain storage or network adapters), route cables neatly to avoid interference with fan assemblies and ensure adequate airflow. Use cable ties or guides to maintain clean airflow paths.
- Install PCIe devices: Insert the PCIe adapters into the appropriate x16 or x8 lanes supported by the riser configuration. Confirm that each card is fully seated and secured in its slot with screws if required by the chassis design.
- Reconnect power and verify: Reinstall the server cover, reconnect power, and boot the system. Enter the BIOS/UEFI to confirm that the PCIe devices are recognized and that the lane configuration reflects the x16/x8 setup. Update firmware or BIOS as recommended by Lenovo if compatibility issues are observed.
- Test and confirm performance: After the operating system loads, verify that the installed PCIe devices are functioning correctly. Run basic I/O tests or vendor-provided validation tools to confirm lane performance and device stability under typical workloads.
Frequently asked questions
- What is the Lenovo ThinkSystem SR550/SR590/SR650 x16/x8 PCIe FH Riser 1 Kit? It is an enterprise-grade PCIe riser kit that enables flexible lane routing (x16 to x8) for expansion cards in Lenovo ThinkSystem SR550, SR590, and SR650 servers, allowing you to optimize I/O configuration for your workloads.
- Which server models are compatible with this riser? The kit is designed for Lenovo ThinkSystem SR550, SR590, and SR650 servers. Ensure your chassis supports FH risers and the corresponding PCIe slot layout before installation.
- Do I need to power down the server to install the riser? Yes. For safety and to protect components, power down the system, unplug power, and discharge static before handling internal components.
- Will this riser affect warranty or service eligibility? As an official Lenovo component designed for ThinkSystem servers, installing the riser kit should align with Lenovo’s warranty and service framework. Always follow Lenovo’s installation procedures to ensure warranty coverage remains valid.
- Can I use this riser with other PCIe devices beyond GPUs and NICs? The kit is suitable for a range of PCIe devices that conform to the PCIe standard and fit within the supported lane configuration. Check device compatibility and power requirements for any high-performance components you plan to install.
- How can I verify proper operation after installation? After installation, boot the server and check the BIOS/UEFI for device recognition, then validate in the operating system with vendor tools to confirm correct lane configuration and device performance.
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Exchange/Return Notes
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4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
It's entry level but it does it great.
Set name: 5.1 Receiver
For what it is, an entry level reciver it is great. Haven't had it long now, about a month but it has been great. Used to own onkyo, pioneer and Harmon Kardon recivers back before HDMI and blu ray. Have used a soundbar for the past few years but finally decided to jump back on a detecated surround system. For my apartment this sounds phenomenal. I don't normally mess with the DSPs so I can't comment on those, I prefer direct sound. Could it use more power? Probably but again this is entry level stuff. I use 12 gauge speaker wire on the front 3 speakers and 14 to the surrounds and it sounds great. Front speakers are 6 ohms and rears are 8 but no trouble driving them. Dialog is crystal clear and the overall sound is warm and pleasant. Playback of Blu ray and Ultra blu ray in both DTS HD and Dolby TrueHD is such a treat, absolutely made me realize how limited a soundbar was. Music playback is fantastic, have my laptop with Jriver hooked up through HDMI for playback of FLAC and WAV audio files from 44khz/16bit all the way up to 192khz/24bit with every genre of music. Put it in direct stereo mode and it sounds blissful. DSD playback does work but only at 2.8mhz DSD64 which is still great considering the price. 4K pass through works as it should, no troubles with HDR or Dolby Vision content. Can't comment on FM or am radio playback. Bluetooth playback is alright, music enhancer does a noticible job of cleaning the music a bit, nothing extreme but does add a cetain clarity. The Bluetooth could have been a more recent standard especially since this reciver came out in 2018 but again entry level. For my Echo it is fine for the rare occasion I send audio to it. Playback of music from LG V60 over Bluetooth sounds okay but wired connection still beats wireless as far as audio is concerned and if you just playing back mp3s AAC, it won't matter, it works. 4K upscale works fine, really didn't mess with it too much because TV is normally going to do a better job of upscalling anyway. Has auto HDCP detection which is nice, allows all HDMI connections to play nice. Binding posts with Banna plug compatibility is nice to see at this price. User interface is nice and simple. One area I can see trouble with is the fact you have to go online for the manual. Again, as a entry level reciver there isn't really much to complain about.
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Reviewed in the United States on December 4, 2020
★★★★★ 4
Nice for the price
Set name: 5.1 Receiver, Set name: 5.1 Receiver
Was extremely easy to set up. The automatic sound balancing works good. Sound quality is good as is the surround sound feature. I personally feels it loses a bit of sound quality when connecting a Bluetooth item like my phone. Otherwise, I am satisfied.
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Reviewed in the United States on February 18, 2026
★★★★★ 5
Far superior to price comparable Sony receiver
Set name: 5.1 Receiver
I want to compare this to Sony STRDH590, which I owned before this and is of a comparable price. My Sony stopped receiving signal from its remote control within 2 years. There was no way to control many features due to this. The Yamaha has a wide range of buttons on the front if the remote fails.
Now that I have this Yamaha and can compare the sound, this is MUCH better than the Sony. The sound is crisp and clear. This Yamaha receiver has a 5ch stereo expansion setting and the Sony did not even have that. This receiver also has a direct setting that turns off all extra parts of the stereo to attempt to get a clearer signal, including the front panel. The Sony has the nicer input ports (the ones that take the banana plugs) only on the left and right channel where this Yamaha has them for all five channels. The subwoofer output from the Yamaha is considerably better than the Sony and produces a cleaner sound.
The Yamaha setup is extremely easy and takes just a few minutes with the included microphone. So far I haven't had too much difficulty with voices being quiet in movies. There are several applicable sound options for how to process movie input.
The only downsides to this Yamaha are that it only has 4 HDMI inputs and doesn't support eARC. According to the marking ARC is only on the first HDMI input.
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Reviewed in the United States on December 14, 2025
★★★★★ 5
Excellent sound and function
Set name: 5.1 Receiver
We're very pleased with this unit. We use a 3.1 system in our TV area, stereo plus center channel and subwoofer. It's nice that this unit supports that. We get very nice imaging from this, and don't really miss the surround speakers.
**We had to replace the old HDMI cables with new ones that could handle the larger bandwidth of 4K. If you're cables are 5-10 years old like ours, newer cables are required to carry a modern video signal.
We like the Yamaha sound, and are able to EQ it easily to sound right for the room. I've used several receivers over the years of various brands. Yamaha consistently delivers good sound and reliable product. I've never had a Yamaha product fail and fewer than 15 years.
There are other units out there with more gadgets and gizmos, bills and whistles, not to mention smoke and mirrors. We want a good sounding reliable unit that plays nice with all of our AV sources and TVs. If that's what you're looking for, look no further than this unit right here.
If you get a good price on this, it's unbeatable.
Sony, Onkyo, Denon, Marantz, etc. - they all make good units with signature sounds. If you aren't familiar with them, and If you can't listen to a bunch of stuff, buy this with confidence.
Here's an unsolicited recommendation: high quality speakers will do more to improve your listening experience than any receiver. If you're looking for an upgrade, start with your front speakers.
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Reviewed in the United States on November 15, 2024
★★★★★ 5
Love my Yamahas
Set name: 5.1 Receiver
RX 385 replaces my much-loved 10 year old RX 375, which I inadvertently fried while experimenting.
The 385 has some newer features, including bluetooth. The old model and this both use the handy YPAO function to tune the audio speakers' depth of field to the listening environment. It's a broadcast mic that you just plug into the front of the receiver for a few seconds to determine each speakers' distance from viewer. Kind of a sonic echo measurement of seating to speaker. It's a foolproof, remarkably clever, timesaving gizmo. The YPAO mic is absolutely included with this unit, looks like a little plastic cone.
Also important to me, Yamaha has replaced the old spring clips for rear/side speakers, which are now the better screw and cap posts, as they have always been for the two front speakers.
I recommend rocketfish HDMI 4k/8k cables to connect this receiver to your tv and to whatever other components you want, such as a bluray. Sound quality is excellent if your speakers are good. (I like KEFs.)
Of course you may prefer wireless speakers, but I'm already committed to wired ones. I used rocktfish banana plugs to connect my speaker wires to the RX 385 receiver's speaker posts. Neat and clean.
With a choice of 2 front, 2 rear, 1 center speaker, plus one coaxial plug in for a subwoofer, your movies and programs are going to sound far more detailed and staged than you'd get from the tv or a sound bar. It's a more immersive and compelling experience. (I use only 2 fronts and 2 rears and don't feel I'm missing anything.)
Yamaha receivers and other components are my favorites: relatively inexpensive, well designed, solidly built, and not fussy to install. If you find yourself in a pickle there are a couple of helpful youtube videos.
I find with the RX385 again that Yamaha does not disappoint me.
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Reviewed in the United States on April 18, 2023
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