200G/400G Ethernet NIC (non-accelerated)

机箱用的是SGCC还是SECC钢板？主体和面板分别多厚(0.8mm、1.0mm还是1.2mm)？表面处理是电镀锌、喷粉还是烤漆？空机箱净重多少公斤？

SGCC or SECC steel, what thickness for body and front panel (0.8/1.0/1.2 mm), what surface finish (electro-zinc, powder coat, paint), and what is the empty chassis weight in kg?

Missing from the report despite chassis being its designated high-margin entry lane. Gauge is what separates a cheap chassis from a rigid one, and it is directly checkable on receipt.

我们付了模具费(NRE)之后，模具的所有权归谁？模具寿命多少万模次？后续能不能把模具转移到别家工厂？模具保管和维护费用怎么算？

After we pay the NRE, who owns the tooling, what is its rated life in shots, can it be transferred to another factory, and who pays storage and maintenance?

The classic China custom-mechanical trap. Paying for a mould you do not own converts a commodity part into a sole-source part.

风扇在多少英寸水柱静压下能达到多少CFM风量？不要只给自由风量。风扇是哪家、什么型号？整机的风墙总风量是多少？噪音多少分贝？

What is fan airflow in CFM at a stated static pressure (inH2O) — not free-air CFM? Which fan vendor and part number, what is total fan-wall airflow, and what is the noise level in dBA?

The report puts this in a note but never turns it into a field. Free-air CFM is meaningless behind a populated GPU chassis.

这个准系统报价具体含哪些：机箱、主板、背板、风扇模组、电源、导风罩、线缆、导轨、硬盘托架各含不含？不含的部分单价分别是多少？

Itemise what the barebone includes and excludes: chassis, motherboard, backplane, fan modules, PSUs, air duct, internal cables, rails, drive carriers. Price each excluded item separately.

'Barebone' means different things at every factory. Without this, two barebone quotes differ by 30% for reasons nobody can see.

端口速率和数量是多少（如 2×25G SFP28、2×100G QSFP28、1×400G OSFP）？是否支持降速运行？

Port speed and count (e.g. 2x25G SFP28, 2x100G QSFP28, 1x400G OSFP)? Does it support running at lower speeds?

Baseline comparability field

主控芯片的完整型号是什么（如 MCX623106AN-CDAT、Intel E810-CAM2）？能否提供芯片丝印照片？

Full controller part number (e.g. MCX623106AN-CDAT, Intel E810-CAM2)? Can you send photos of the chip markings?

Marketing names hide sub-variants with different offload capability; chip photos also expose relabelled fakes

主机接口是 PCIe 几代、几通道（Gen3 x8 / Gen4 x16 / Gen5 x16）？在我方服务器上能否跑满标称带宽？

Host interface generation and width (PCIe Gen3 x8 / Gen4 x16 / Gen5 x16)? Will it reach rated bandwidth in our server?

The most common silent downgrade: the right ports on the wrong bus

板卡形态是标准 PCIe（半高/全高、半长/全长）、OCP 3.0 SFF、OCP 2.0 还是某 OEM 的 rNDC/FlexLOM 子卡？

Form factor: standard PCIe (HHHL/FHHL), OCP 3.0 SFF, OCP 2.0, or an OEM rNDC/FlexLOM daughter card?

OCP and rNDC cards are chassis-specific and not resellable across platforms

固件是原厂通用版还是 OEM 定制（戴尔/HPE/联想）？PSID 是什么？能否刷成通用固件？在非同品牌服务器上是否会报未授权设备？

Is the firmware generic vendor firmware or OEM-branded (Dell/HPE/Lenovo)? What is the PSID? Can it be cross-flashed to generic? Will a non-matching server flag it as unauthorised?

OEM-locked cards are cheaper for a reason and may refuse to initialise in another vendor's server

支持哪些卸载：RoCEv2、SR-IOV（最大 VF 数量）、DPDK、PTP 硬件打时戳、IPsec/TLS 加解密、NVMe-oF？请提供驱动与操作系统支持矩阵。

Which offloads: RoCEv2, SR-IOV (max VF count), DPDK, PTP hardware timestamping, IPsec/TLS crypto, NVMe-oF? Please send the driver and OS support matrix.

Two cards at the same speed can differ by an order of magnitude here; VF count alone can decide a cloud build

货品状态是全新原封、原厂散装、拆机件、翻新件还是工程样片（ES/QS）？能否提供来源说明、原始包装和序列号可查性证明？

Is the stock new sealed, new bulk, OEM pull, refurbished, or an engineering sample (ES/QS)? Can you evidence provenance, original packaging and serial-number verifiability?

Engineering samples are not licensed for production use and may carry pre-release firmware; this is the field that separates real quotes from fantasies

网卡 MAC 地址属于哪家的 OUI？是否为该主控厂商正式申请的地址段？同批次是否存在重复 MAC 或重复序列号？能否提供随机抽样的 MAC 与 SN 清单供我方核验？

Which OUI do the cards' MAC addresses belong to, and is it the controller vendor's registered block? Are there duplicate MACs or serials within a batch? Can you send a random sample of MAC/SN pairs for us to verify?

The cheapest and most decisive anti-counterfeit test on NICs: cloned and relabelled cards routinely carry duplicated or unregistered MAC blocks, which also breaks DHCP and LACP at scale

该网卡在满负荷时要求的最小风量是多少 LFM？风向要求是前进后出还是后进前出？在我方机箱的槽位风道下是否需要额外散热片？

Minimum airflow in LFM at full load? Required direction (front-to-back or back-to-front)? Does it need an extra heatsink in our chassis' slot airflow?

400G and OCP 3.0 cards have hard LFM minimums; a card that meets spec in the vendor's test chassis thermally throttles or shuts down in a shallower one. Never appears on a price quote

驱动是操作系统内核自带（in-box）还是需要单独安装（out-of-tree）？支持哪些内核版本、发行版和虚拟化平台（VMware/KVM/Hyper-V）的具体版本号？该卡是否在这些平台的官方兼容性列表（HCL）中？

Is the driver in-box in the OS kernel or an out-of-tree module? Which exact kernel versions, distributions and hypervisor versions (VMware/KVM/Hyper-V) are supported, and is the card on those platforms' official HCL?

An out-of-tree driver is a maintenance liability for the life of the fleet; HCL absence blocks vendor support on the whole host, not just the card

出货固件基线版本是多少(BIOS/BMC/NIC/RAID逐项列出)？后续安全更新提供多少年？由谁发布、从哪个地址下载？固件是否签名？

State the shipping firmware baseline per component (BIOS/BMC/NIC/RAID). For how many years will security updates be provided, by whom, from what URL, and is firmware signed?

The most common whitebox gap: nobody commits to who ships the next security patch, or for how long.

贵司是否为原厂授权代理或授权分销商？如是，请提供授权书扫描件（含有效期）与代理编号。如不是，请说明上游是哪一级渠道，是否可提供上游采购凭证。

Are you an authorised distributor or reseller for this brand? If so, send the authorisation letter with its validity dates and your account code. If not, state which tier your upstream is and whether you can show the upstream purchase document.

Separates an authorised channel (where OEM warranty and serial registration actually exist) from open-market stock. Most sellers cannot produce this, which is itself the answer.

该型号是否在【主板型号+版本+BIOS版本】上实测通过？满配（每通道几条）时能跑到多少MT/s？请提供该平台的实测截图或兼容性列表，注明测试日期。

Has this exact part been tested on [board model + revision + BIOS version]? At full population (how many per channel), what speed does it actually train to? Send the test screenshot or compatibility list with the test date.

'Compatible' is not a spec. Validation is against a named board revision and a named BIOS/BMC version, at a named population density and speed.

BMC与BIOS固件是否有数字签名与安全启动？出厂默认账号密码是什么，是否每台唯一？是否能提供固件的SBOM(软件物料清单)与开源组件许可清单？固件由哪家公司编译发布？

Are BMC and BIOS firmware digitally signed, and is secure boot enabled? What are the factory default credentials, and are they unique per unit? Can you supply an SBOM and open-source licence list for the firmware? Which company builds and publishes it?

Whitebox BMCs commonly ship with shared default credentials, unsigned firmware and open management ports. This is the field that turns 'firmware provenance' from a sentence into a check.