From: Jonathan Morton <chromatix99@gmail.com>
To: David Lang <david@lang.hm>
Cc: Michael Richardson <mcr@sandelman.ca>,
"cerowrt-devel@lists.bufferbloat.net"
<cerowrt-devel@lists.bufferbloat.net>
Subject: Re: [Cerowrt-devel] Looking for MORE SQM Router Recommendations !
Date: Wed, 17 Mar 2021 04:57:24 +0200 [thread overview]
Message-ID: <CFB9220F-9B89-4CB9-B70A-D448F809C09D@gmail.com> (raw)
In-Reply-To: <nycvar.QRO.7.76.6.2103161800390.2570187@qynat-yncgbc>
> On 17 Mar, 2021, at 3:01 am, David Lang <david@lang.hm> wrote:
>
> This is using the compute module, that does not have any on-board ports
Actually, the CM4 brings the on-board GigE interface out to the connector pins via a suitable PHY. All that is needed is a magjack on the carrier. What this particular carrier does is to provide a *twin* magjack, wire the appropriate CM4 pins to half of it, and wire the other half to a LAN7800 USB-to-GigE adapter. The latter is then wired up to the CM4 via a 4-port USB hub chip, so there are also three USB ports (one on a header, two as physical ports).
All but the cheapest of the CM4 models also include a single-channel, dual-band wifi/BT chip. This requires only an antenna to make it an austere but probably usable AP. For better performance, a multi-channel wifi adapter could be plugged into the USB header, and the cheapest CM4 "Lite" would probably then be sufficient.
- Jonathan Morton
next prev parent reply other threads:[~2021-03-17 2:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1287379027.1155590.1615919208363.ref@mail.yahoo.com>
2021-03-16 18:26 ` Charles Rothschild
[not found] ` <mailman.2387.1615919214.24343.cerowrt-devel@lists.bufferbloat.net>
2021-03-16 22:03 ` [Cerowrt-devel] " Jonathan Morton
2021-03-16 22:04 ` Dave Taht
2021-03-16 22:14 ` Jonathan Morton
2021-03-16 22:58 ` Michael Richardson
2021-03-17 1:01 ` David Lang
2021-03-17 2:57 ` Jonathan Morton [this message]
2021-03-17 6:11 ` Sebastian Moeller
2021-03-17 3:06 ` Matt Taggart
2021-03-17 10:54 ` Toke Høiland-Jørgensen
[not found] ` <mailman.2393.1615978451.24343.cerowrt-devel@lists.bufferbloat.net>
2021-03-19 4:23 ` Aaron Wood
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