DAC-SFP-10G-xM-BCC | Dell Compatible SFP+ to SFP+ DAC Cable, Passive, 10GB, 10GBASE-CU | 1 to 5M

Q: Will this work in place of the Dell DAC-SFP-10G-1M?
A: Yes. This cable meets the 10GBASE-CU standard and the SFP+ MSA form factor specification that Dell platforms require. It is plug-and-play compatible and will be recognized as a passive twinax DAC by Dell switches and routers with SFP+ ports.

Q: Which Dell platforms support this cable?
A: This cable works in any Dell switch or router with SFP+ ports that accept 10GBASE-CU passive DAC cables, including Dell PowerSwitch and Networking platforms. If your Dell device has an SFP+ slot and supports passive twinax, this cable will function without issue.

Q: What is the practical reach limit for passive DAC, and when should I use active or optical cables instead?
A: Passive DAC cables are reliable up to 5 meters. Beyond that length, signal attenuation and crosstalk increase beyond acceptable margins for 10 Gbps operation. For runs longer than 5M, use an active DAC (which includes signal conditioning) or optical transceivers with fiber, which can reach 300M on multi-mode or 10 km on single-mode.

Q: Can I mix different cable lengths between the same pair of switches, or will that cause timing issues?
A: You can mix lengths freely. Each cable is an independent point-to-point link. Because passive DAC has negligible propagation delay variation across the 1M to 5M range, there is no timing skew concern. Link aggregation, ECMP, or independent 10G links all work normally with mixed lengths.

Q: Does this cable support EEPROM access, and will it report temperature or power data like an optical transceiver?
A: Yes, the cable includes EEPROM (per SFF-8472) that stores vendor and compliance data, which the host can read via the I2C interface. However, passive DAC cables do not monitor temperature, voltage, or power because they contain no active circuitry or optical components. Those diagnostic parameters are only available with optical transceivers or active cables.