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identity=mailfrom; envelope-from="sl4mmy@zerosphere.org"; helo=smtp119.iad3a.emailsrvr.com; client-ip=173.203.187.119 Received: from smtp119.iad3a.emailsrvr.com (smtp119.iad3a.emailsrvr.com [173.203.187.119]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by tb-mx0.topicbox.com (Postfix) with ESMTPS for <9fans@9fans.net>; Fri, 28 Jan 2022 14:32:37 -0500 (EST) (envelope-from sl4mmy@zerosphere.org) Received: from app54.wa-webapps.iad3a (relay-webapps.rsapps.net [172.27.255.140]) by smtp39.relay.iad3a.emailsrvr.com (SMTP Server) with ESMTP id 5BEDC54EB for <9fans@9fans.net>; Fri, 28 Jan 2022 14:32:37 -0500 (EST) Received: from zerosphere.org (localhost.localdomain [127.0.0.1]) by app54.wa-webapps.iad3a (Postfix) with ESMTP id 48416E1C70 for <9fans@9fans.net>; Fri, 28 Jan 2022 14:32:37 -0500 (EST) Received: by apps.rackspace.com (Authenticated sender: sl4mmy@zerosphere.org, from: sl4mmy@zerosphere.org) with HTTP; Fri, 28 Jan 2022 13:32:37 -0600 (CST) X-Auth-ID: sl4mmy@zerosphere.org Date: Fri, 28 Jan 2022 13:32:37 -0600 (CST) Subject: Re: [9fans] building blocks speaking 9p From: "Kent R. Spillner" To: "9fans" <9fans@9fans.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Importance: Normal X-Priority: 3 (Normal) X-Type: plain In-Reply-To: References: X-Client-IP: 176.236.226.121 Message-ID: <1643398357.292815497@apps.rackspace.com> X-Mailer: webmail/19.0.13-RC X-Classification-ID: 35377a26-5d52-4bdd-9a55-6aa715745940-1-1 Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 0fbac7e8-8071-11ec-8664-ce5ddbad6abb Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UYTRlNTg0YTM3M2IwNTU1My1NMTQwMDIxODY5OWNkNDQ3MTY5ZmEw?= =?UTF-8?B?YjE2Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M1400218699cd447169fa0b16:1:X3soJdZobR-Po_nKtI_xguW1_KP6Jrb6xnVHozbnhjs > What does it do that PoE doesn't do infinitely better? For most of its life USB was only 5 V: https://en.wikipedia.org/wiki/USB#Po= wer PoE is (mostly) 48 V: https://en.wikipedia.org/wiki/Power_over_Ethernet#Sta= ndard_implementation PoE also requires the use of either special PoE switches or power injectors, so at the time USB was first created it was cheaper & made more sense for PC and laptop hardware. Also, back then the USB folks were all like "4 different PoE standards?! Th= at's ridiculous!" https://xkcd.com/927/ ;) ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Ta4e584a373b05553-M14002= 18699cd447169fa0b16 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription