# Direct Attach QSFP28 Cable BlueOptics CAB-Q-Q-100GbE-3M-BL, QSFP28 to QSFP28, 100GBASE-CR4, Infiniband EDR, 26AWG, 3 m

**URL:** https://aio.lv/en/product--blueoptics-cab-q-q-100gbe-3m-bl--12233707
**Data updated:** 2026-03-29 16:20 (EEST)
**Category:** Network Cables
**Manufacturer:** BlueOptics
**Manufacturer code:** CAB-Q-Q-100GbE-3M-BL
**EAN:** 4063232349411
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.49 €
**Prices and availability valid until:** 2026-08-25 23:59
**Price without VAT (21%):** 111.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blueoptics-cab-q-q-100gbe-3m-bl--12233707

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.08.2026 | free |
| Pickup points | 27.08.2026 | 1.79 EUR |
| Courier delivery to door | 27.08.2026 | 4.99 EUR |

## Summary description

BlueOptics CAB-Q-Q-100GbE-3M-BL is a 3-meter QSFP28 direct attach copper (DAC) cable supporting 100GBASE-CR4 and Infiniband EDR. Built with 26AWG conductors, it connects QSFP28 ports for short-reach 100 Gbps links in switches, servers and storage systems. Suitable for rack-to-rack and intra-rack connections where low-latency, high-bandwidth copper interconnects are required.

## Long description

BlueOptics CAB-Q-Q-100GbE-3M-BL is a 3-meter QSFP28 direct attach copper (DAC) cable designed for short-reach 100 Gbps links. The cable features QSFP28 to QSFP28 connectivity and supports 100GBASE-CR4 and InfiniBand EDR protocols, enabling high-bandwidth, low-latency interconnects between switches, servers and storage systems in data center environments. Constructed with 26 AWG conductors, this passive copper assembly provides a cost-effective solution for rack-to-rack and intra-rack connections where optical transceivers are not necessary.
Advantages
This QSFP28 DAC cable offers plug-and-play compatibility with QSFP28 ports and delivers line-rate 100 Gbps performance over a short distance without the need for additional transceivers or optical modules. The 26 AWG copper conductors provide reliable electrical signaling while maintaining manageable cable thickness for cable management in dense racks. The cable’s passive design reduces power consumption compared with active solutions and simplifies installation and replacement in high-density networking setups.
Suitable for
 Rack-to-rack 100G connections in data centers
 Intra-rack links between servers, switches and storage arrays
 Low-latency high-bandwidth interconnects for HPC clusters using InfiniBand EDR
 Short-reach 100GBASE-CR4 networking links where optical transceivers are not required
Key specifications
 Connector type: QSFP28 to QSFP28
 Supported protocols: 100GBASE-CR4, InfiniBand EDR
 Cable length: 3 meters
 Conductor gauge: 26 AWG
 Cable type: Direct attach copper (passive DAC)
 Typical application: Short-reach data center interconnects (rack-to-rack, intra-rack)
How to use
Connect each QSFP28 connector to the corresponding QSFP28 port on your networking equipment, ensuring both devices are powered down or follow hot-plug guidelines from the equipment vendor. The cable is intended for short-reach connections; route it through the rack using proper cable management to avoid sharp bends and excessive tension. Verify link status on connected devices and confirm that they are configured for 100GBASE-CR4 or InfiniBand EDR as required by your network setup.
Usage recommendations
For optimal performance, use this 3 m passive QSFP28 DAC in short-reach applications within the same rack or between adjacent racks. Avoid exceeding the recommended bend radius for 26 AWG copper cables and keep the cable away from high EMI sources. Check equipment compatibility and supported link modes before deployment to ensure proper operation at 100 Gbps.

## FAQ

### How much does the BlueOptics QSFP28 Direct Attach Cable 3m CAB-Q-Q-100GbE-3M-BL cost, and is it available for purchase?

The price is 134.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 312 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 24.08.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All BlueOptics products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized BlueOptics service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty