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CC: ApptechNZ Sender: "piclist-bounces@mit.edu" Date: Wed, 6 Jan 2021 19:16:06 -0800 Subject: Re: [EE]:: Chromebook psu cable colours / functionality Thread-Topic: [EE]:: Chromebook psu cable colours / functionality Thread-Index: AdbkpOtu1VZJgpM/TSGDHnvT2P+BLQ== Message-ID: <1C992B1E-AA7B-4EBE-A5D2-4CF99DB6FAEB@mac.com> References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of mac.com designates 17.58.23.199 as permitted sender) receiver=protection.outlook.com; client-ip=17.58.23.199; helo=mr85p00im-ztdg06011801.me.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mac.com; s=1a1hai; t=1609989367; bh=+gaPBQ0Wl8BEUg0iL+buwjhM83BPY7UC8gtDK8h/WDE=; h=From:Message-Id:Content-Type:Mime-Version:Subject:Date:To; b=BHxC8WEBfJRVo7FMj2IhzdBdDABZxWKwvxOB68xvz63IxK2GNdU1Kog8gAgtmxlPo L8uGIOFQgQoZSzvYSIkE0cM+HlmLmweDWxQymzbPGF9m68wwD1SjRDLD+qJ5AkomBy RGuW1KfZlPsoJTapE/3Re9CYiUp64mAkq3y98B8+cezhk+JhMY2jxTuQ12bz6N9ltd WoUnC5ofiFa0W20qa17Kw6ygL3DKHT1c1AAdw1Qt7oDORtVEwbjasAWVlFb7gobeq6 vB6eQhkDy46ilT/4eU6P59YQ68npEUQ8NYCf77vp+XPrKPqxrdf2Il0JO7EB2tV+NA /AkRauXMgqqug== authentication-results: spf=pass (sender IP is 17.58.23.199) smtp.mailfrom=mac.com; mit.edu; dkim=pass (signature was verified) header.d=mac.com;mit.edu; dmarc=pass action=none header.from=mac.com; errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-proofpoint-virus-version: vendor=fsecure engine=2.50.10434:6.0.343, 18.0.737 definitions=2021-01-07_02:2021-01-06, 2021-01-07 signatures=0 x-proofpoint-spam-details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 mlxscore=0 mlxlogscore=628 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-2006250000 definitions=main-2101070018 x-topics: [EE] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 > Voltage selection for various 5V/ XA ratings is typically by resistor mag= ic. Are you sure? I thought older USB was via resistors, but that the new USB-C stuff involve= d software-level negotiation, sort-of like PoE. BillW --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .